2156365630 has 16 divisors (see below), whose sum is σ = 3947246640. Its totient is φ = 847926592.

The previous prime is 2156365609. The next prime is 2156365633. The reversal of 2156365630 is 365636512.

It is a self number, because there is not a number n which added to its sum of digits gives 2156365630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156365633) 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, 1826839 + ... + 1828018.

It is an arithmetic number, because the mean of its divisors is an integer number (246702915).

Almost surely, 2^2156365630 is an apocalyptic number.

2156365630 is a deficient number, since it is larger than the sum of its proper divisors (1790881010).

2156365630 is a wasteful number, since it uses less digits than its factorization.

2156365630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3654923.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 2156365630 is about 46436.6840978122. The cubic root of 2156365630 is about 1291.9354058292.

The spelling of 2156365630 in words is "two billion, one hundred fifty-six million, three hundred sixty-five thousand, six hundred thirty".