188857094407 has 2 divisors, whose sum is σ = 188857094408. Its totient is φ = 188857094406.

The previous prime is 188857094347. The next prime is 188857094417. The reversal of 188857094407 is 704490758881.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188857094407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188857094417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94428547203 + 94428547204.

It is an arithmetic number, because the mean of its divisors is an integer number (94428547204).

Almost surely, 2^188857094407 is an apocalyptic number.

188857094407 is a deficient number, since it is larger than the sum of its proper divisors (1).

188857094407 is an equidigital number, since it uses as much as digits as its factorization.

188857094407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18063360, while the sum is 61.

The spelling of 188857094407 in words is "one hundred eighty-eight billion, eight hundred fifty-seven million, ninety-four thousand, four hundred seven".