18968860 has 12 divisors (see below), whose sum is σ = 39834648. Its totient is φ = 7587536.

The previous prime is 18968843. The next prime is 18968861. The reversal of 18968860 is 6886981.

It is a self number, because there is not a number n which added to its sum of digits gives 18968860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18968861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474202 + ... + 474241.

It is an arithmetic number, because the mean of its divisors is an integer number (3319554).

Almost surely, 2^18968860 is an apocalyptic number.

18968860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18968860 is an abundant number, since it is smaller than the sum of its proper divisors (20865788).

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

18968860 is a wasteful number, since it uses less digits than its factorization.

18968860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948452 (or 948450 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 18968860 is about 4355.3254757825. The cubic root of 18968860 is about 266.6943061629.

The spelling of 18968860 in words is "eighteen million, nine hundred sixty-eight thousand, eight hundred sixty".