13109387954 has 16 divisors (see below), whose sum is σ = 21198419928. Its totient is φ = 6044282112.

The previous prime is 13109387927. The next prime is 13109387981. The reversal of 13109387954 is 45978390131.

It is an interprime number because it is at equal distance from previous prime (13109387927) and next prime (13109387981).

It can be written as a sum of positive squares in 4 ways, for example, as 11648237329 + 1461150625 = 107927^2 + 38225^2 .

It is a super-2 number, since 2×13109387954² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232637 + ... + 283440.

Almost surely, 2^13109387954 is an apocalyptic number.

13109387954 is a deficient number, since it is larger than the sum of its proper divisors (8089031974).

13109387954 is a wasteful number, since it uses less digits than its factorization.

13109387954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517069.

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 13109387954 in words is "thirteen billion, one hundred nine million, three hundred eighty-seven thousand, nine hundred fifty-four".