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1318887054 = 232713492957
BaseRepresentation
bin100111010011100…
…1001111010001110
310101220201101220200
41032213021322032
510200113341204
6334512154330
744453232522
oct11647117216
93356641820
101318887054
11617528401
123098389a6
1318031b954
14c7239d82
157abc1539
hex4e9c9e8e

1318887054 has 48 divisors (see below), whose sum is σ = 2907122400. Its totient is φ = 432048960.

The previous prime is 1318887049. The next prime is 1318887061. The reversal of 1318887054 is 4507888131.

It is a happy number.

It is a super-2 number, since 2×13188870542 = 3478926122417597832, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 444544 + ... + 447500.

It is an arithmetic number, because the mean of its divisors is an integer number (60565050).

Almost surely, 21318887054 is an apocalyptic number.

1318887054 is an abundant number, since it is smaller than the sum of its proper divisors (1588235346).

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

1318887054 is a wasteful number, since it uses less digits than its factorization.

1318887054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3385 (or 3382 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The square root of 1318887054 is about 36316.4846041023. The cubic root of 1318887054 is about 1096.6529261476.

The spelling of 1318887054 in words is "one billion, three hundred eighteen million, eight hundred eighty-seven thousand, fifty-four".

Divisors: 1 2 3 6 9 18 71 142 213 349 426 639 698 1047 1278 2094 2957 3141 5914 6282 8871 17742 24779 26613 49558 53226 74337 148674 209947 223011 419894 446022 629841 1031993 1259682 1889523 2063986 3095979 3779046 6191958 9287937 18575874 73271503 146543006 219814509 439629018 659443527 1318887054