157193937 has 36 divisors (see below), whose sum is σ = 240083844. Its totient is φ = 99095040.

The previous prime is 157193923. The next prime is 157193941. The reversal of 157193937 is 739391751.

It can be written as a sum of positive squares in 2 ways, for example, as 105698961 + 51494976 = 10281^2 + 7176^2 .

It is not a de Polignac number, because 157193937 - 2⁶ = 157193873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157193892 and 157193901.

It is not an unprimeable number, because it can be changed into a prime (157193947) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 652137 + ... + 652377.

Almost surely, 2^157193937 is an apocalyptic number.

It is an amenable number.

157193937 is a deficient number, since it is larger than the sum of its proper divisors (82889907).

157193937 is a wasteful number, since it uses less digits than its factorization.

157193937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 404 counting only the distinct ones).

The product of its digits is 178605, while the sum is 45.

The square root of 157193937 is about 12537.7006265104. The cubic root of 157193937 is about 539.6911093504.

The spelling of 157193937 in words is "one hundred fifty-seven million, one hundred ninety-three thousand, nine hundred thirty-seven".