18672453884 has 12 divisors (see below), whose sum is σ = 37344907824. Its totient is φ = 8002480224.

The previous prime is 18672453853. The next prime is 18672453887. The reversal of 18672453884 is 48835427681.

18672453884 is an admirable number.

It is a super-3 number, since 3×18672453884³ (a number of 32 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18672453887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333436649 + ... + 333436704.

It is an arithmetic number, because the mean of its divisors is an integer number (3112075652).

Almost surely, 2^18672453884 is an apocalyptic number.

18672453884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18672453884 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18672453884 is a wasteful number, since it uses less digits than its factorization.

18672453884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666873364 (or 666873362 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 56.

The spelling of 18672453884 in words is "eighteen billion, six hundred seventy-two million, four hundred fifty-three thousand, eight hundred eighty-four".