2156404112 has 40 divisors (see below), whose sum is σ = 4271634336. Its totient is φ = 1054285056.

The previous prime is 2156404111. The next prime is 2156404153. The reversal of 2156404112 is 2114046512.

It is not an unprimeable number, because it can be changed into a prime (2156404111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139523 + ... + 154205.

Almost surely, 2^2156404112 is an apocalyptic number.

It is an amenable number.

2156404112 is a deficient number, since it is larger than the sum of its proper divisors (2115230224).

2156404112 is a wasteful number, since it uses less digits than its factorization.

2156404112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14895 (or 14889 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 2156404112 is about 46437.0984451010. The cubic root of 2156404112 is about 1291.9430909765.

The spelling of 2156404112 in words is "two billion, one hundred fifty-six million, four hundred four thousand, one hundred twelve".