13897804168 has 8 divisors (see below), whose sum is σ = 26058382830. Its totient is φ = 6948902080.

The previous prime is 13897804159. The next prime is 13897804169. The reversal of 13897804168 is 86140879831.

It can be written as a sum of positive squares in only one way, i.e., 7999871364 + 5897932804 = 89442^2 + 76798^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13897804169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 868612753 + ... + 868612768.

Almost surely, 2^13897804168 is an apocalyptic number.

It is an amenable number.

13897804168 is a deficient number, since it is larger than the sum of its proper divisors (12160578662).

13897804168 is a wasteful number, since it uses less digits than its factorization.

13897804168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737225527 (or 1737225523 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 13897804168 in words is "thirteen billion, eight hundred ninety-seven million, eight hundred four thousand, one hundred sixty-eight".