18750386995169 has 2 divisors, whose sum is σ = 18750386995170. Its totient is φ = 18750386995168.

The previous prime is 18750386995133. The next prime is 18750386995243. The reversal of 18750386995169 is 96159968305781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9900386734144 + 8850000261025 = 3146488^2 + 2974895^2 .

It is a cyclic number.

It is not a de Polignac number, because 18750386995169 - 2²⁸ = 18750118559713 is a prime.

It is a super-2 number, since 2×18750386995169² (a number of 27 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 18750386995169.

It is not a weakly prime, because it can be changed into another prime (18750386995069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9375193497584 + 9375193497585.

It is an arithmetic number, because the mean of its divisors is an integer number (9375193497585).

Almost surely, 2^{18750386995169} is an apocalyptic number.

It is an amenable number.

18750386995169 is a deficient number, since it is larger than the sum of its proper divisors (1).

18750386995169 is an equidigital number, since it uses as much as digits as its factorization.

18750386995169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 881798400, while the sum is 77.

The spelling of 18750386995169 in words is "eighteen trillion, seven hundred fifty billion, three hundred eighty-six million, nine hundred ninety-five thousand, one hundred sixty-nine".