2013913665 has 32 divisors (see below), whose sum is σ = 3585980160. Its totient is φ = 1072380672.

The previous prime is 2013913637. The next prime is 2013913679. The reversal of 2013913665 is 5663193102.

2013913665 is a `hidden beast` number, since 201 + 3 + 91 + 366 + 5 = 666.

It is not a de Polignac number, because 2013913665 - 2⁵ = 2013913633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75817 + ... + 98873.

It is an arithmetic number, because the mean of its divisors is an integer number (112061880).

Almost surely, 2^2013913665 is an apocalyptic number.

It is an amenable number.

2013913665 is a deficient number, since it is larger than the sum of its proper divisors (1572066495).

2013913665 is a wasteful number, since it uses less digits than its factorization.

2013913665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23718 (or 23712 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 2013913665 is about 44876.6494404384. The cubic root of 2013913665 is about 1262.8359873008.

The spelling of 2013913665 in words is "two billion, thirteen million, nine hundred thirteen thousand, six hundred sixty-five".