13918736637 has 12 divisors (see below), whose sum is σ = 21651368284. Its totient is φ = 8565376320.

The previous prime is 13918736609. The next prime is 13918736641. The reversal of 13918736637 is 73663781931.

It can be written as a sum of positive squares in 2 ways, for example, as 5754891321 + 8163845316 = 75861^2 + 90354^2 .

It is not a de Polignac number, because 13918736637 - 2¹⁴ = 13918720253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13918736647) 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, 59481664 + ... + 59481897.

Almost surely, 2^13918736637 is an apocalyptic number.

It is an amenable number.

13918736637 is a deficient number, since it is larger than the sum of its proper divisors (7732631647).

13918736637 is a wasteful number, since it uses less digits than its factorization.

13918736637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118963580 (or 118963577 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The spelling of 13918736637 in words is "thirteen billion, nine hundred eighteen million, seven hundred thirty-six thousand, six hundred thirty-seven".