13113491518 has 16 divisors (see below), whose sum is σ = 21138169104. Its totient is φ = 6078948480.

The previous prime is 13113491513. The next prime is 13113491519. The reversal of 13113491518 is 81519431131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113491513) 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, 2876013 + ... + 2880568.

It is an arithmetic number, because the mean of its divisors is an integer number (1321135569).

Almost surely, 2^13113491518 is an apocalyptic number.

13113491518 is a deficient number, since it is larger than the sum of its proper divisors (8024677586).

13113491518 is a wasteful number, since it uses less digits than its factorization.

13113491518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5756667.

The product of its digits is 12960, while the sum is 37.

The spelling of 13113491518 in words is "thirteen billion, one hundred thirteen million, four hundred ninety-one thousand, five hundred eighteen".