18746380764 has 36 divisors (see below), whose sum is σ = 47704729800. Its totient is φ = 6206853600.

The previous prime is 18746380717. The next prime is 18746380769. The reversal of 18746380764 is 46708364781.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18746380764.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18746380769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1742062 + ... + 1752789.

Almost surely, 2^18746380764 is an apocalyptic number.

It is an amenable number.

18746380764 is an abundant number, since it is smaller than the sum of its proper divisors (28958349036).

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

18746380764 is a wasteful number, since it uses less digits than its factorization.

18746380764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3495010 (or 3495005 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 18746380764 in words is "eighteen billion, seven hundred forty-six million, three hundred eighty thousand, seven hundred sixty-four".