157617138 has 16 divisors (see below), whose sum is σ = 360267840. Its totient is φ = 45033456.

The previous prime is 157617073. The next prime is 157617157. The reversal of 157617138 is 831716751.

157617138 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×157617138² = 49686324382622088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 157617096 and 157617105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1876353 + ... + 1876436.

It is an arithmetic number, because the mean of its divisors is an integer number (22516740).

Almost surely, 2^157617138 is an apocalyptic number.

157617138 is an abundant number, since it is smaller than the sum of its proper divisors (202650702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157617138 is a wasteful number, since it uses less digits than its factorization.

157617138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752801.

The product of its digits is 35280, while the sum is 39.

The square root of 157617138 is about 12554.5664202313. The cubic root of 157617138 is about 540.1749981518.

The spelling of 157617138 in words is "one hundred fifty-seven million, six hundred seventeen thousand, one hundred thirty-eight".