13949915165 has 16 divisors (see below), whose sum is σ = 17770917888. Its totient is φ = 10476016896.

The previous prime is 13949915143. The next prime is 13949915207. The reversal of 13949915165 is 56151994931.

It is not a de Polignac number, because 13949915165 - 2¹⁰ = 13949914141 is a prime.

It is a super-2 number, since 2×13949915165² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181697 + ... + 246806.

It is an arithmetic number, because the mean of its divisors is an integer number (1110682368).

Almost surely, 2^13949915165 is an apocalyptic number.

It is an amenable number.

13949915165 is a deficient number, since it is larger than the sum of its proper divisors (3821002723).

13949915165 is a wasteful number, since it uses less digits than its factorization.

13949915165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428908.

The product of its digits is 1312200, while the sum is 53.

The spelling of 13949915165 in words is "thirteen billion, nine hundred forty-nine million, nine hundred fifteen thousand, one hundred sixty-five".