18995580916219 has 2 divisors, whose sum is σ = 18995580916220. Its totient is φ = 18995580916218.

The previous prime is 18995580916187. The next prime is 18995580916231. The reversal of 18995580916219 is 91261908559981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18995580916219 - 2⁵ = 18995580916187 is a prime.

It is a super-2 number, since 2×18995580916219² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18995580616219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9497790458109 + 9497790458110.

It is an arithmetic number, because the mean of its divisors is an integer number (9497790458110).

Almost surely, 2^{18995580916219} is an apocalyptic number.

18995580916219 is a deficient number, since it is larger than the sum of its proper divisors (1).

18995580916219 is an equidigital number, since it uses as much as digits as its factorization.

18995580916219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125971200, while the sum is 73.

The spelling of 18995580916219 in words is "eighteen trillion, nine hundred ninety-five billion, five hundred eighty million, nine hundred sixteen thousand, two hundred nineteen".