162491620 has 12 divisors (see below), whose sum is σ = 341232444. Its totient is φ = 64996640.

The previous prime is 162491551. The next prime is 162491621. The reversal of 162491620 is 26194261.

It can be written as a sum of positive squares in 2 ways, for example, as 115047076 + 47444544 = 10726^2 + 6888^2 .

It is not an unprimeable number, because it can be changed into a prime (162491621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4062271 + ... + 4062310.

It is an arithmetic number, because the mean of its divisors is an integer number (28436037).

Almost surely, 2^162491620 is an apocalyptic number.

162491620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162491620 is an abundant number, since it is smaller than the sum of its proper divisors (178740824).

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

162491620 is a wasteful number, since it uses less digits than its factorization.

162491620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8124590 (or 8124588 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 162491620 is about 12747.2200891018. The cubic root of 162491620 is about 545.6870609874.

The spelling of 162491620 in words is "one hundred sixty-two million, four hundred ninety-one thousand, six hundred twenty".