186918374099 has 2 divisors, whose sum is σ = 186918374100. Its totient is φ = 186918374098.

The previous prime is 186918374087. The next prime is 186918374161. The reversal of 186918374099 is 990473819681.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-186918374099 is a prime.

It is not a weakly prime, because it can be changed into another prime (186918344099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93459187049 + 93459187050.

It is an arithmetic number, because the mean of its divisors is an integer number (93459187050).

Almost surely, 2^186918374099 is an apocalyptic number.

186918374099 is a deficient number, since it is larger than the sum of its proper divisors (1).

186918374099 is an equidigital number, since it uses as much as digits as its factorization.

186918374099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23514624, while the sum is 65.

The spelling of 186918374099 in words is "one hundred eighty-six billion, nine hundred eighteen million, three hundred seventy-four thousand, ninety-nine".