18220076454 has 16 divisors (see below), whose sum is σ = 36444058992. Its totient is φ = 6072707808.

The previous prime is 18220076393. The next prime is 18220076461. The reversal of 18220076454 is 45467002281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100269 + ... + 215624.

It is an arithmetic number, because the mean of its divisors is an integer number (2277753687).

Almost surely, 2^18220076454 is an apocalyptic number.

18220076454 is an abundant number, since it is smaller than the sum of its proper divisors (18223982538).

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

18220076454 is a wasteful number, since it uses less digits than its factorization.

18220076454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325511.

The product of its (nonzero) digits is 107520, while the sum is 39.

The spelling of 18220076454 in words is "eighteen billion, two hundred twenty million, seventy-six thousand, four hundred fifty-four".