18800400454 has 8 divisors (see below), whose sum is σ = 30764291688. Its totient is φ = 8545636560.

The previous prime is 18800400449. The next prime is 18800400481. The reversal of 18800400454 is 45400400881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18800400454² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427281807 + ... + 427281850.

It is an arithmetic number, because the mean of its divisors is an integer number (3845536461).

Almost surely, 2^18800400454 is an apocalyptic number.

18800400454 is a deficient number, since it is larger than the sum of its proper divisors (11963891234).

18800400454 is a wasteful number, since it uses less digits than its factorization.

18800400454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854563670.

The product of its (nonzero) digits is 20480, while the sum is 34.

The spelling of 18800400454 in words is "eighteen billion, eight hundred million, four hundred thousand, four hundred fifty-four".