188786804994 has 12 divisors (see below), whose sum is σ = 409038077526. Its totient is φ = 62928934992.

The previous prime is 188786804993. The next prime is 188786805029. The reversal of 188786804994 is 499408687881.

It is a happy number.

188786804994 is a `hidden beast` number, since 1 + 8 + 8 + 78 + 68 + 0 + 499 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 184373195769 + 4413609225 = 429387^2 + 66435^2 .

It is not an unprimeable number, because it can be changed into a prime (188786804993) 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, 5244077899 + ... + 5244077934.

Almost surely, 2^188786804994 is an apocalyptic number.

188786804994 is an abundant number, since it is smaller than the sum of its proper divisors (220251272532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

188786804994 is a wasteful number, since it uses less digits than its factorization.

188786804994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10488155841 (or 10488155838 counting only the distinct ones).

The product of its (nonzero) digits is 222953472, while the sum is 72.

The spelling of 188786804994 in words is "one hundred eighty-eight billion, seven hundred eighty-six million, eight hundred four thousand, nine hundred ninety-four".