186318164069 has 2 divisors, whose sum is σ = 186318164070. Its totient is φ = 186318164068.

The previous prime is 186318163979. The next prime is 186318164077. The reversal of 186318164069 is 960461813681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132255868900 + 54062295169 = 363670^2 + 232513^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-186318164069 is a prime.

It is a super-2 number, since 2×186318164069² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 186318164069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (186318164269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93159082034 + 93159082035.

It is an arithmetic number, because the mean of its divisors is an integer number (93159082035).

Almost surely, 2^186318164069 is an apocalyptic number.

It is an amenable number.

186318164069 is a deficient number, since it is larger than the sum of its proper divisors (1).

186318164069 is an equidigital number, since it uses as much as digits as its factorization.

186318164069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 186318164069 in words is "one hundred eighty-six billion, three hundred eighteen million, one hundred sixty-four thousand, sixty-nine".