2156589162 has 96 divisors (see below), whose sum is σ = 6089271552. Its totient is φ = 535306752.

The previous prime is 2156589161. The next prime is 2156589187. The reversal of 2156589162 is 2619856512.

2156589162 is a `hidden beast` number, since 2 + 1 + 5 + 6 + 589 + 1 + 62 = 666.

It is not an unprimeable number, because it can be changed into a prime (2156589161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10878 + ... + 66569.

It is an arithmetic number, because the mean of its divisors is an integer number (63429912).

Almost surely, 2^2156589162 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2156589162, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3044635776).

2156589162 is an abundant number, since it is smaller than the sum of its proper divisors (3932682390).

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

2156589162 is a wasteful number, since it uses less digits than its factorization.

2156589162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77492 (or 77489 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 2156589162 is about 46439.0908825743. The cubic root of 2156589162 is about 1291.9800455883.

The spelling of 2156589162 in words is "two billion, one hundred fifty-six million, five hundred eighty-nine thousand, one hundred sixty-two".