18729950084426 has 48 divisors (see below), whose sum is σ = 32979924220320. Its totient is φ = 7954131558240.

The previous prime is 18729950084401. The next prime is 18729950084437. The reversal of 18729950084426 is 62448005992781.

It is a super-2 number, since 2×18729950084426² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5809796 + ... + 8438816.

It is an arithmetic number, because the mean of its divisors is an integer number (687081754590).

Almost surely, 2^{18729950084426} is an apocalyptic number.

18729950084426 is a deficient number, since it is larger than the sum of its proper divisors (14249974135894).

18729950084426 is a wasteful number, since it uses less digits than its factorization.

18729950084426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629699 (or 2629692 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 65.

The spelling of 18729950084426 in words is "eighteen trillion, seven hundred twenty-nine billion, nine hundred fifty million, eighty-four thousand, four hundred twenty-six".