18568980 has 96 divisors (see below), whose sum is σ = 58423680. Its totient is φ = 4896000.

The previous prime is 18568973. The next prime is 18568993. The reversal of 18568980 is 8986581.

18568980 is a `hidden beast` number, since 1 + 8 + 568 + 9 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73855 + ... + 74105.

It is an arithmetic number, because the mean of its divisors is an integer number (608580).

Almost surely, 2^18568980 is an apocalyptic number.

18568980 is a gapful number since it is divisible by the number (10) 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 18568980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29211840).

18568980 is an abundant number, since it is smaller than the sum of its proper divisors (39854700).

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

18568980 is a wasteful number, since it uses less digits than its factorization.

18568980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 18568980 is about 4309.1739347583. The cubic root of 18568980 is about 264.8069318777.

The spelling of 18568980 in words is "eighteen million, five hundred sixty-eight thousand, nine hundred eighty".