157938569 has 8 divisors (see below), whose sum is σ = 161179200. Its totient is φ = 154707696.

The previous prime is 157938563. The next prime is 157938581. The reversal of 157938569 is 965839751.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157938569 is a prime.

It is a super-2 number, since 2×157938569² = 49889183155535522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157938569.

It is not an unprimeable number, because it can be changed into a prime (157938563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36482 + ... + 40580.

It is an arithmetic number, because the mean of its divisors is an integer number (20147400).

Almost surely, 2^157938569 is an apocalyptic number.

It is an amenable number.

157938569 is a deficient number, since it is larger than the sum of its proper divisors (3240631).

157938569 is an equidigital number, since it uses as much as digits as its factorization.

157938569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4879.

The product of its digits is 2041200, while the sum is 53.

The square root of 157938569 is about 12567.3612584345. The cubic root of 157938569 is about 540.5419444909.

The spelling of 157938569 in words is "one hundred fifty-seven million, nine hundred thirty-eight thousand, five hundred sixty-nine".