18273383040 has 128 divisors (see below), whose sum is σ = 63541609920. Its totient is φ = 4429905920.

The previous prime is 18273383033. The next prime is 18273383069. The reversal of 18273383040 is 4038337281.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 18273383040.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411489 + ... + 453728.

Almost surely, 2^18273383040 is an apocalyptic number.

18273383040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18273383040 is an abundant number, since it is smaller than the sum of its proper divisors (45268226880).

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

18273383040 is a wasteful number, since it uses less digits than its factorization.

18273383040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865250 (or 865238 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 18273383040 in words is "eighteen billion, two hundred seventy-three million, three hundred eighty-three thousand, forty".