15189866164 has 18 divisors (see below), whose sum is σ = 29218524482. Its totient is φ = 6904484400.

The previous prime is 15189866161. The next prime is 15189866177. The reversal of 15189866164 is 46166898151.

It can be written as a sum of positive squares in only one way, i.e., 15102443664 + 87422500 = 122892^2 + 9350^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15189866161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15691527 + ... + 15692494.

Almost surely, 2^15189866164 is an apocalyptic number.

It is an amenable number.

15189866164 is a deficient number, since it is larger than the sum of its proper divisors (14028658318).

15189866164 is a wasteful number, since it uses less digits than its factorization.

15189866164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31384047 (or 31384034 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 55.

The spelling of 15189866164 in words is "fifteen billion, one hundred eighty-nine million, eight hundred sixty-six thousand, one hundred sixty-four".