157963491 has 24 divisors (see below), whose sum is σ = 263084640. Its totient is φ = 89462016.

The previous prime is 157963483. The next prime is 157963523. The reversal of 157963491 is 194369751.

157963491 is a `hidden beast` number, since 1 + 5 + 7 + 9 + 634 + 9 + 1 = 666.

157963491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157963491 - 2³ = 157963483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157963411) 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, 3976 + ... + 18213.

It is an arithmetic number, because the mean of its divisors is an integer number (10961860).

Almost surely, 2^157963491 is an apocalyptic number.

157963491 is a deficient number, since it is larger than the sum of its proper divisors (105121149).

157963491 is a wasteful number, since it uses less digits than its factorization.

157963491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22315 (or 22312 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 157963491 is about 12568.3527560297. The cubic root of 157963491 is about 540.5703746962.

The spelling of 157963491 in words is "one hundred fifty-seven million, nine hundred sixty-three thousand, four hundred ninety-one".