188679245291 has 2 divisors, whose sum is σ = 188679245292. Its totient is φ = 188679245290.

The previous prime is 188679245273. The next prime is 188679245297. The reversal of 188679245291 is 192542976881.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188679245291 is a prime.

It is not a weakly prime, because it can be changed into another prime (188679245297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94339622645 + 94339622646.

It is an arithmetic number, because the mean of its divisors is an integer number (94339622646).

Almost surely, 2^188679245291 is an apocalyptic number.

188679245291 is a deficient number, since it is larger than the sum of its proper divisors (1).

188679245291 is an equidigital number, since it uses as much as digits as its factorization.

188679245291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 62.

The spelling of 188679245291 in words is "one hundred eighty-eight billion, six hundred seventy-nine million, two hundred forty-five thousand, two hundred ninety-one".