18960021726 has 32 divisors (see below), whose sum is σ = 38210296320. Its totient is φ = 6271673856.

The previous prime is 18960021683. The next prime is 18960021763. The reversal of 18960021726 is 62712006981.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2612635 + ... + 2619881.

It is an arithmetic number, because the mean of its divisors is an integer number (1194071760).

Almost surely, 2^18960021726 is an apocalyptic number.

18960021726 is an abundant number, since it is smaller than the sum of its proper divisors (19250274594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18960021726 is a wasteful number, since it uses less digits than its factorization.

18960021726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10528.

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 18960021726 in words is "eighteen billion, nine hundred sixty million, twenty-one thousand, seven hundred twenty-six".