2156095215 has 24 divisors (see below), whose sum is σ = 3738316608. Its totient is φ = 1149583680.

The previous prime is 2156095211. The next prime is 2156095217. The reversal of 2156095215 is 5125906512.

2156095215 is a `hidden beast` number, since 2 + 1 + 560 + 95 + 2 + 1 + 5 = 666.

It is not a de Polignac number, because 2156095215 - 2² = 2156095211 is a prime.

It is a super-2 number, since 2×2156095215² = 9297493152291792450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2156095215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156095211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 279105 + ... + 286725.

It is an arithmetic number, because the mean of its divisors is an integer number (155763192).

Almost surely, 2^2156095215 is an apocalyptic number.

2156095215 is a deficient number, since it is larger than the sum of its proper divisors (1582221393).

2156095215 is a wasteful number, since it uses less digits than its factorization.

2156095215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13919 (or 13916 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 2156095215 is about 46433.7723537513. The cubic root of 2156095215 is about 1291.8813993236.

The spelling of 2156095215 in words is "two billion, one hundred fifty-six million, ninety-five thousand, two hundred fifteen".