188064791 has 2 divisors, whose sum is σ = 188064792. Its totient is φ = 188064790.

The previous prime is 188064787. The next prime is 188064841. The reversal of 188064791 is 197460881.

188064791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 188064791 - 2² = 188064787 is a prime.

It is a super-2 number, since 2×188064791² = 70736731227747362, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188064091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94032395 + 94032396.

It is an arithmetic number, because the mean of its divisors is an integer number (94032396).

Almost surely, 2^188064791 is an apocalyptic number.

188064791 is a deficient number, since it is larger than the sum of its proper divisors (1).

188064791 is an equidigital number, since it uses as much as digits as its factorization.

188064791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 188064791 is about 13713.6716819384. The cubic root of 188064791 is about 572.9312334797.

The spelling of 188064791 in words is "one hundred eighty-eight million, sixty-four thousand, seven hundred ninety-one".