188972628013 has 4 divisors (see below), whose sum is σ = 203508984028. Its totient is φ = 174436272000.

The previous prime is 188972628007. The next prime is 188972628059. The reversal of 188972628013 is 310826279881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310826279881 = 13 ⋅23909713837.

It can be written as a sum of positive squares in 2 ways, for example, as 54941953609 + 134030674404 = 234397^2 + 366102^2 .

It is a cyclic number.

It is not a de Polignac number, because 188972628013 - 2⁵ = 188972627981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188972428013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7268177988 + ... + 7268178013.

It is an arithmetic number, because the mean of its divisors is an integer number (50877246007).

Almost surely, 2^188972628013 is an apocalyptic number.

188972628013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

188972628013 is a deficient number, since it is larger than the sum of its proper divisors (14536356015).

188972628013 is a wasteful number, since it uses less digits than its factorization.

188972628013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14536356014.

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

The spelling of 188972628013 in words is "one hundred eighty-eight billion, nine hundred seventy-two million, six hundred twenty-eight thousand, thirteen".