188613013613 has 2 divisors, whose sum is σ = 188613013614. Its totient is φ = 188613013612.

The previous prime is 188613013597. The next prime is 188613013663. The reversal of 188613013613 is 316310316881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181418920489 + 7194093124 = 425933^2 + 84818^2 .

It is a cyclic number.

It is not a de Polignac number, because 188613013613 - 2⁴ = 188613013597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188613013663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94306506806 + 94306506807.

It is an arithmetic number, because the mean of its divisors is an integer number (94306506807).

Almost surely, 2^188613013613 is an apocalyptic number.

It is an amenable number.

188613013613 is a deficient number, since it is larger than the sum of its proper divisors (1).

188613013613 is an equidigital number, since it uses as much as digits as its factorization.

188613013613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 188613013613 in words is "one hundred eighty-eight billion, six hundred thirteen million, thirteen thousand, six hundred thirteen".