2161536204 has 24 divisors (see below), whose sum is σ = 5150896128. Its totient is φ = 705181840.

The previous prime is 2161536191. The next prime is 2161536227. The reversal of 2161536204 is 4026351612.

It is a super-2 number, since 2×2161536204² = 9344477522405459232, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1915692 + ... + 1916819.

It is an arithmetic number, because the mean of its divisors is an integer number (214620672).

Almost surely, 2^2161536204 is an apocalyptic number.

It is an amenable number.

2161536204 is an abundant number, since it is smaller than the sum of its proper divisors (2989359924).

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

2161536204 is a wasteful number, since it uses less digits than its factorization.

2161536204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832565 (or 3832563 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2161536204 is about 46492.3241406579. The cubic root of 2161536204 is about 1292.9671905825.

Adding to 2161536204 its reverse (4026351612), we get a palindrome (6187887816).

The spelling of 2161536204 in words is "two billion, one hundred sixty-one million, five hundred thirty-six thousand, two hundred four".