18901054656 has 168 divisors, whose sum is σ = 59458823424. Its totient is φ = 5692976640.

The previous prime is 18901054589. The next prime is 18901054663. The reversal of 18901054656 is 65645010981.

18901054656 is a `hidden beast` number, since 1 + 8 + 90 + 10 + 546 + 5 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1049181 + ... + 1067043.

It is an arithmetic number, because the mean of its divisors is an integer number (353921568).

Almost surely, 2^18901054656 is an apocalyptic number.

18901054656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18901054656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29729411712).

18901054656 is an abundant number, since it is smaller than the sum of its proper divisors (40557768768).

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

18901054656 is a wasteful number, since it uses less digits than its factorization.

18901054656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18059 (or 18046 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 18901054656 in words is "eighteen billion, nine hundred one million, fifty-four thousand, six hundred fifty-six".