13438757387 has 16 divisors (see below), whose sum is σ = 14857543680. Its totient is φ = 12053059200.

The previous prime is 13438757369. The next prime is 13438757401. The reversal of 13438757387 is 78375783431.

It is a cyclic number.

It is not a de Polignac number, because 13438757387 - 2⁸ = 13438757131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13438757357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1273043 + ... + 1283555.

It is an arithmetic number, because the mean of its divisors is an integer number (928596480).

Almost surely, 2^13438757387 is an apocalyptic number.

13438757387 is a deficient number, since it is larger than the sum of its proper divisors (1418786293).

13438757387 is a wasteful number, since it uses less digits than its factorization.

13438757387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12074.

The product of its digits is 11854080, while the sum is 56.

The spelling of 13438757387 in words is "thirteen billion, four hundred thirty-eight million, seven hundred fifty-seven thousand, three hundred eighty-seven".