18745764 has 48 divisors (see below), whose sum is σ = 47412288. Its totient is φ = 5741568.

The previous prime is 18745763. The next prime is 18745787. The reversal of 18745764 is 46754781.

It is not an unprimeable number, because it can be changed into a prime (18745763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7704 + ... + 9840.

It is an arithmetic number, because the mean of its divisors is an integer number (987756).

Almost surely, 2^18745764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18745764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23706144).

18745764 is an abundant number, since it is smaller than the sum of its proper divisors (28666524).

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

18745764 is a wasteful number, since it uses less digits than its factorization.

18745764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204 (or 2202 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 18745764 is about 4329.6378601449. The cubic root of 18745764 is about 265.6446344702.

The spelling of 18745764 in words is "eighteen million, seven hundred forty-five thousand, seven hundred sixty-four".