162157791 has 16 divisors (see below), whose sum is σ = 223821824. Its totient is φ = 104346144.

The previous prime is 162157777. The next prime is 162157841. The reversal of 162157791 is 197751261.

It is not a de Polignac number, because 162157791 - 2⁹ = 162157279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162157591) 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, 8346 + ... + 19848.

It is an arithmetic number, because the mean of its divisors is an integer number (13988864).

Almost surely, 2^162157791 is an apocalyptic number.

162157791 is a deficient number, since it is larger than the sum of its proper divisors (61664033).

162157791 is a wasteful number, since it uses less digits than its factorization.

162157791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11670.

The product of its digits is 26460, while the sum is 39.

The square root of 162157791 is about 12734.1191685958. The cubic root of 162157791 is about 545.3131113274.

The spelling of 162157791 in words is "one hundred sixty-two million, one hundred fifty-seven thousand, seven hundred ninety-one".