157840371 has 12 divisors (see below), whose sum is σ = 245529648. Its totient is φ = 97132464.

The previous prime is 157840363. The next prime is 157840373. The reversal of 157840371 is 173048751.

It is not a de Polignac number, because 157840371 - 2³ = 157840363 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (157840373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 674415 + ... + 674648.

It is an arithmetic number, because the mean of its divisors is an integer number (20460804).

Almost surely, 2^157840371 is an apocalyptic number.

157840371 is a deficient number, since it is larger than the sum of its proper divisors (87689277).

157840371 is a wasteful number, since it uses less digits than its factorization.

157840371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349082 (or 1349079 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 157840371 is about 12563.4537846883. The cubic root of 157840371 is about 540.4298942956.

The spelling of 157840371 in words is "one hundred fifty-seven million, eight hundred forty thousand, three hundred seventy-one".