2156550970 has 16 divisors (see below), whose sum is σ = 4436333568. Its totient is φ = 739388880.

The previous prime is 2156550967. The next prime is 2156550989. The reversal of 2156550970 is 790556512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15403866 + ... + 15404005.

It is an arithmetic number, because the mean of its divisors is an integer number (277270848).

Almost surely, 2^2156550970 is an apocalyptic number.

2156550970 is an abundant number, since it is smaller than the sum of its proper divisors (2279782598).

2156550970 is a wasteful number, since it uses less digits than its factorization.

2156550970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30807885.

The product of its (nonzero) digits is 94500, while the sum is 40.

The square root of 2156550970 is about 46438.6796754602. The cubic root of 2156550970 is about 1291.9724187928.

The spelling of 2156550970 in words is "two billion, one hundred fifty-six million, five hundred fifty thousand, nine hundred seventy".