157913289 has 24 divisors (see below), whose sum is σ = 242439912. Its totient is φ = 98703360.

The previous prime is 157913281. The next prime is 157913293. The reversal of 157913289 is 982319751.

It can be written as a sum of positive squares in 4 ways, for example, as 20250000 + 137663289 = 4500^2 + 11733^2 .

It is not a de Polignac number, because 157913289 - 2³ = 157913281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (157913281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41157 + ... + 44829.

It is an arithmetic number, because the mean of its divisors is an integer number (10101663).

Almost surely, 2^157913289 is an apocalyptic number.

It is an amenable number.

157913289 is a deficient number, since it is larger than the sum of its proper divisors (84526623).

157913289 is a wasteful number, since it uses less digits than its factorization.

157913289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977 (or 3974 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 157913289 is about 12566.3554382327. The cubic root of 157913289 is about 540.5131028352.

The spelling of 157913289 in words is "one hundred fifty-seven million, nine hundred thirteen thousand, two hundred eighty-nine".