18950419924999 has 2 divisors, whose sum is σ = 18950419925000. Its totient is φ = 18950419924998.

The previous prime is 18950419924993. The next prime is 18950419925069. The reversal of 18950419924999 is 99942991405981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18950419924999 - 2²⁹ = 18949883054087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18950419924993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9475209962499 + 9475209962500.

It is an arithmetic number, because the mean of its divisors is an integer number (9475209962500).

Almost surely, 2^{18950419924999} is an apocalyptic number.

18950419924999 is a deficient number, since it is larger than the sum of its proper divisors (1).

18950419924999 is an equidigital number, since it uses as much as digits as its factorization.

18950419924999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680244480, while the sum is 79.

The spelling of 18950419924999 in words is "eighteen trillion, nine hundred fifty billion, four hundred nineteen million, nine hundred twenty-four thousand, nine hundred ninety-nine".