2156673836 has 12 divisors (see below), whose sum is σ = 3774528912. Its totient is φ = 1078237008.

The previous prime is 2156673811. The next prime is 2156673859. The reversal of 2156673836 is 6383766512.

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, 46001 + ... + 80183.

It is an arithmetic number, because the mean of its divisors is an integer number (314544076).

Almost surely, 2^2156673836 is an apocalyptic number.

It is an amenable number.

2156673836 is a deficient number, since it is larger than the sum of its proper divisors (1617855076).

2156673836 is a wasteful number, since it uses less digits than its factorization.

2156673836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49960 (or 49958 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 47.

The square root of 2156673836 is about 46440.0025409129. The cubic root of 2156673836 is about 1291.9969543392.

The spelling of 2156673836 in words is "two billion, one hundred fifty-six million, six hundred seventy-three thousand, eight hundred thirty-six".