18679764 has 24 divisors (see below), whose sum is σ = 44650368. Its totient is φ = 6074560.

The previous prime is 18679729. The next prime is 18679769. The reversal of 18679764 is 46797681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18679769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18492 + ... + 19475.

It is an arithmetic number, because the mean of its divisors is an integer number (1860432).

Almost surely, 2^18679764 is an apocalyptic number.

It is an amenable number.

18679764 is an abundant number, since it is smaller than the sum of its proper divisors (25970604).

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

18679764 is a wasteful number, since it uses less digits than its factorization.

18679764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38015 (or 38013 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 18679764 is about 4322.0092549646. The cubic root of 18679764 is about 265.3325077343.

The spelling of 18679764 in words is "eighteen million, six hundred seventy-nine thousand, seven hundred sixty-four".