2155937913 has 36 divisors (see below), whose sum is σ = 3331440112. Its totient is φ = 1342701360.

The previous prime is 2155937897. The next prime is 2155937921. The reversal of 2155937913 is 3197395512.

2155937913 is a `hidden beast` number, since 2 + 1 + 559 + 3 + 7 + 91 + 3 = 666.

It is not a de Polignac number, because 2155937913 - 2⁴ = 2155937897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155937963) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 199458 + ... + 209988.

Almost surely, 2^2155937913 is an apocalyptic number.

2155937913 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2155937913 is a deficient number, since it is larger than the sum of its proper divisors (1175502199).

2155937913 is a wasteful number, since it uses less digits than its factorization.

2155937913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10626 (or 10600 counting only the distinct ones).

The product of its digits is 255150, while the sum is 45.

The square root of 2155937913 is about 46432.0784910605. The cubic root of 2155937913 is about 1291.8499813434.

The spelling of 2155937913 in words is "two billion, one hundred fifty-five million, nine hundred thirty-seven thousand, nine hundred thirteen".