18968970 has 16 divisors (see below), whose sum is σ = 45525600. Its totient is φ = 5058384.

The previous prime is 18968969. The next prime is 18969001. The reversal of 18968970 is 7986981.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316120 + ... + 316179.

It is an arithmetic number, because the mean of its divisors is an integer number (2845350).

Almost surely, 2^18968970 is an apocalyptic number.

18968970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18968970 is an abundant number, since it is smaller than the sum of its proper divisors (26556630).

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

18968970 is a wasteful number, since it uses less digits than its factorization.

18968970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632309.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 18968970 is about 4355.3381039823. The cubic root of 18968970 is about 266.6948216800.

The spelling of 18968970 in words is "eighteen million, nine hundred sixty-eight thousand, nine hundred seventy".