188813945207 has 4 divisors (see below), whose sum is σ = 188822641296. Its totient is φ = 188805249120.

The previous prime is 188813945171. The next prime is 188813945209. The reversal of 188813945207 is 702549318881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 188813945207 - 2⁸ = 188813944951 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 (188813945209) 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, 4315394 + ... + 4358927.

It is an arithmetic number, because the mean of its divisors is an integer number (47205660324).

Almost surely, 2^188813945207 is an apocalyptic number.

188813945207 is a deficient number, since it is larger than the sum of its proper divisors (8696089).

188813945207 is an equidigital number, since it uses as much as digits as its factorization.

188813945207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8696088.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 188813945207 in words is "one hundred eighty-eight billion, eight hundred thirteen million, nine hundred forty-five thousand, two hundred seven".