18694764 has 72 divisors (see below), whose sum is σ = 54604368. Its totient is φ = 5329920.

The previous prime is 18694757. The next prime is 18694769. The reversal of 18694764 is 46749681.

It is not an unprimeable number, because it can be changed into a prime (18694769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5344 + ... + 8120.

It is an arithmetic number, because the mean of its divisors is an integer number (758394).

Almost surely, 2^18694764 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 18694764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27302184).

18694764 is an abundant number, since it is smaller than the sum of its proper divisors (35909604).

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

18694764 is a wasteful number, since it uses less digits than its factorization.

18694764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815 (or 2810 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 18694764 is about 4323.7442107507. The cubic root of 18694764 is about 265.4035101083.

The spelling of 18694764 in words is "eighteen million, six hundred ninety-four thousand, seven hundred sixty-four".