18693768 has 16 divisors (see below), whose sum is σ = 46734480. Its totient is φ = 6231248.

The previous prime is 18693757. The next prime is 18693791. The reversal of 18693768 is 86739681.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389430 + ... + 389477.

It is an arithmetic number, because the mean of its divisors is an integer number (2920905).

Almost surely, 2^18693768 is an apocalyptic number.

It is an amenable number.

18693768 is an abundant number, since it is smaller than the sum of its proper divisors (28040712).

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

18693768 is a wasteful number, since it uses less digits than its factorization.

18693768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778916 (or 778912 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 18693768 is about 4323.6290312653. The cubic root of 18693768 is about 265.3987967282.

The spelling of 18693768 in words is "eighteen million, six hundred ninety-three thousand, seven hundred sixty-eight".