18043674672 has 40 divisors (see below), whose sum is σ = 49066135360. Its totient is φ = 5698002240.

The previous prime is 18043674667. The next prime is 18043674679. The reversal of 18043674672 is 27647634081.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (18043674679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9891454 + ... + 9893277.

It is an arithmetic number, because the mean of its divisors is an integer number (1226653384).

Almost surely, 2^18043674672 is an apocalyptic number.

18043674672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18043674672 is an abundant number, since it is smaller than the sum of its proper divisors (31022460688).

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

18043674672 is a wasteful number, since it uses less digits than its factorization.

18043674672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19784761 (or 19784755 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 48.

The spelling of 18043674672 in words is "eighteen billion, forty-three million, six hundred seventy-four thousand, six hundred seventy-two".