2161597876 has 12 divisors (see below), whose sum is σ = 3793335840. Its totient is φ = 1077787640.

The previous prime is 2161597847. The next prime is 2161597897. The reversal of 2161597876 is 6787951612.

2161597876 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2161597876² = 9345010755055422752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751210 + ... + 754081.

It is an arithmetic number, because the mean of its divisors is an integer number (316111320).

Almost surely, 2^2161597876 is an apocalyptic number.

It is an amenable number.

2161597876 is a deficient number, since it is larger than the sum of its proper divisors (1631737964).

2161597876 is a wasteful number, since it uses less digits than its factorization.

2161597876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505654 (or 1505652 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 52.

The square root of 2161597876 is about 46492.9873851961. The cubic root of 2161597876 is about 1292.9794872559.

The spelling of 2161597876 in words is "two billion, one hundred sixty-one million, five hundred ninety-seven thousand, eight hundred seventy-six".