157932861 has 8 divisors (see below), whose sum is σ = 215713344. Its totient is φ = 102720480.

The previous prime is 157932857. The next prime is 157932871. The reversal of 157932861 is 168239751.

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

It is not a de Polignac number, because 157932861 - 2² = 157932857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157932821) 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, 641881 + ... + 642126.

It is an arithmetic number, because the mean of its divisors is an integer number (26964168).

Almost surely, 2^157932861 is an apocalyptic number.

It is an amenable number.

157932861 is a deficient number, since it is larger than the sum of its proper divisors (57780483).

157932861 is a wasteful number, since it uses less digits than its factorization.

157932861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284051.

The product of its digits is 90720, while the sum is 42.

The square root of 157932861 is about 12567.1341601815. The cubic root of 157932861 is about 540.5354325696.

The spelling of 157932861 in words is "one hundred fifty-seven million, nine hundred thirty-two thousand, eight hundred sixty-one".