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1361531470 = 2513311312579
BaseRepresentation
bin101000100100111…
…0101001001001110
310111212221222001111
41101021311021032
510242023001340
6343034202234
745511553335
oct12111651116
93455858044
101361531470
11639604822
1231bb8337a
13189100030
14ccb7ad1c
157e7e6aea
hex5127524e

1361531470 has 64 divisors (see below), whose sum is σ = 2746275840. Its totient is φ = 482601600.

The previous prime is 1361531453. The next prime is 1361531471. The reversal of 1361531470 is 741351631.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a cake number, because a cake can be divided into 1361531470 parts by 2014 planar cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361531471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 526641 + ... + 529219.

It is an arithmetic number, because the mean of its divisors is an integer number (42910560).

Almost surely, 21361531470 is an apocalyptic number.

1361531470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1361531470 is an abundant number, since it is smaller than the sum of its proper divisors (1384744370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1361531470 is a wasteful number, since it uses less digits than its factorization.

1361531470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 1361531470 is about 36898.9358925159. The cubic root of 1361531470 is about 1108.3473688966.

The spelling of 1361531470 in words is "one billion, three hundred sixty-one million, five hundred thirty-one thousand, four hundred seventy".

Divisors: 1 2 5 10 13 26 31 62 65 130 131 155 262 310 403 655 806 1310 1703 2015 2579 3406 4030 4061 5158 8122 8515 12895 17030 20305 25790 33527 40610 52793 67054 79949 105586 159898 167635 263965 335270 337849 399745 527930 675698 799490 1039337 1689245 2078674 3378490 4392037 5196685 8784074 10393370 10473319 20946638 21960185 43920370 52366595 104733190 136153147 272306294 680765735 1361531470