2156057356 has 12 divisors (see below), whose sum is σ = 3800245960. Its totient is φ = 1070272800.

The previous prime is 2156057353. The next prime is 2156057359. The reversal of 2156057356 is 6537506512.

It is an interprime number because it is at equal distance from previous prime (2156057353) and next prime (2156057359).

It is not an unprimeable number, because it can be changed into a prime (2156057353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1938345 + ... + 1939456.

Almost surely, 2^2156057356 is an apocalyptic number.

It is an amenable number.

2156057356 is a deficient number, since it is larger than the sum of its proper divisors (1644188604).

2156057356 is a wasteful number, since it uses less digits than its factorization.

2156057356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3877944 (or 3877942 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 2156057356 is about 46433.3646853208. The cubic root of 2156057356 is about 1291.8738378727.

The spelling of 2156057356 in words is "two billion, one hundred fifty-six million, fifty-seven thousand, three hundred fifty-six".