13498649631 has 12 divisors (see below), whose sum is σ = 19499093640. Its totient is φ = 8998617840.

The previous prime is 13498649627. The next prime is 13498649651. The reversal of 13498649631 is 13694689431.

13498649631 is a `hidden beast` number, since 1 + 3 + 49 + 86 + 496 + 31 = 666.

It is not a de Polignac number, because 13498649631 - 2² = 13498649627 is a prime.

It is a super-2 number, since 2×13498649631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13498649611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240385 + ... + 291173.

It is an arithmetic number, because the mean of its divisors is an integer number (1624924470).

Almost surely, 2^13498649631 is an apocalyptic number.

13498649631 is a deficient number, since it is larger than the sum of its proper divisors (6000444009).

13498649631 is a wasteful number, since it uses less digits than its factorization.

13498649631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80326 (or 80323 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The spelling of 13498649631 in words is "thirteen billion, four hundred ninety-eight million, six hundred forty-nine thousand, six hundred thirty-one".