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1308129953 = 13791273739
BaseRepresentation
bin100110111111000…
…0111101010100001
310101011110212221112
41031332013222201
510134340124303
6333445433105
744262630644
oct11576075241
93334425845
101308129953
11611450439
1230610b795
1317b0235c0
14c5a39a5b
1579c990d8
hex4df87aa1

1308129953 has 8 divisors (see below), whose sum is σ = 1426588800. Its totient is φ = 1192218768.

The previous prime is 1308129929. The next prime is 1308129959. The reversal of 1308129953 is 3599218031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1308129953 - 212 = 1308125857 is a prime.

It is a super-2 number, since 2×13081299532 = 3422407947871564418, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1308129953.

It is not an unprimeable number, because it can be changed into a prime (1308129959) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 635843 + ... + 637896.

It is an arithmetic number, because the mean of its divisors is an integer number (178323600).

Almost surely, 21308129953 is an apocalyptic number.

1308129953 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1308129953 is a deficient number, since it is larger than the sum of its proper divisors (118458847).

1308129953 is a wasteful number, since it uses less digits than its factorization.

1308129953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273831.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 1308129953 is about 36168.0791997585. The cubic root of 1308129953 is about 1093.6632779872.

It can be divided in two parts, 13081 and 29953, that added together give a palindrome (43034).

The spelling of 1308129953 in words is "one billion, three hundred eight million, one hundred twenty-nine thousand, nine hundred fifty-three".

Divisors: 1 13 79 1027 1273739 16558607 100625381 1308129953