157662393 has 16 divisors (see below), whose sum is σ = 245360640. Its totient is φ = 88175376.

The previous prime is 157662391. The next prime is 157662397. The reversal of 157662393 is 393266751.

It is not a de Polignac number, because 157662393 - 2¹ = 157662391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157662391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78883 + ... + 80856.

It is an arithmetic number, because the mean of its divisors is an integer number (15335040).

Almost surely, 2^157662393 is an apocalyptic number.

It is an amenable number.

157662393 is a deficient number, since it is larger than the sum of its proper divisors (87698247).

157662393 is a wasteful number, since it uses less digits than its factorization.

157662393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159796.

The product of its digits is 204120, while the sum is 42.

The square root of 157662393 is about 12556.3686231330. The cubic root of 157662393 is about 540.2266915159.

The spelling of 157662393 in words is "one hundred fifty-seven million, six hundred sixty-two thousand, three hundred ninety-three".