18799925487439 has 2 divisors, whose sum is σ = 18799925487440. Its totient is φ = 18799925487438.

The previous prime is 18799925487379. The next prime is 18799925487487. The reversal of 18799925487439 is 93478452999781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18799925487439 - 2⁴¹ = 16600902231887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18799925287439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9399962743719 + 9399962743720.

It is an arithmetic number, because the mean of its divisors is an integer number (9399962743720).

Almost surely, 2^{18799925487439} is an apocalyptic number.

18799925487439 is a deficient number, since it is larger than the sum of its proper divisors (1).

18799925487439 is an equidigital number, since it uses as much as digits as its factorization.

18799925487439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9876142080, while the sum is 85.

The spelling of 18799925487439 in words is "eighteen trillion, seven hundred ninety-nine billion, nine hundred twenty-five million, four hundred eighty-seven thousand, four hundred thirty-nine".