18089984156 has 48 divisors (see below), whose sum is σ = 33014016000. Its totient is φ = 8663872320.

The previous prime is 18089984149. The next prime is 18089984177. The reversal of 18089984156 is 65148998081.

It is a junction number, because it is equal to n+sod(n) for n = 18089984095 and 18089984104.

It is a congruent number.

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, 5081105 + ... + 5084663.

It is an arithmetic number, because the mean of its divisors is an integer number (687792000).

Almost surely, 2^18089984156 is an apocalyptic number.

It is an amenable number.

18089984156 is a deficient number, since it is larger than the sum of its proper divisors (14924031844).

18089984156 is a wasteful number, since it uses less digits than its factorization.

18089984156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4002 (or 4000 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 59.

The spelling of 18089984156 in words is "eighteen billion, eighty-nine million, nine hundred eighty-four thousand, one hundred fifty-six".