18383658372 has 48 divisors (see below), whose sum is σ = 47669272000. Its totient is φ = 6126865920.

The previous prime is 18383658361. The next prime is 18383658383. The reversal of 18383658372 is 27385638381.

It is an interprime number because it is at equal distance from previous prime (18383658361) and next prime (18383658383).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 923379 + ... + 943077.

Almost surely, 2^18383658372 is an apocalyptic number.

18383658372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18383658372 is an abundant number, since it is smaller than the sum of its proper divisors (29285613628).

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

18383658372 is a wasteful number, since it uses less digits than its factorization.

18383658372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28353 (or 28345 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 18383658372 in words is "eighteen billion, three hundred eighty-three million, six hundred fifty-eight thousand, three hundred seventy-two".