18385472764 has 6 divisors (see below), whose sum is σ = 32174577344. Its totient is φ = 9192736380.

The previous prime is 18385472761. The next prime is 18385472771. The reversal of 18385472764 is 46727458381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18385472761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2298184092 + ... + 2298184099.

Almost surely, 2^18385472764 is an apocalyptic number.

It is an amenable number.

18385472764 is a deficient number, since it is larger than the sum of its proper divisors (13789104580).

18385472764 is a wasteful number, since it uses less digits than its factorization.

18385472764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596368195 (or 4596368193 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 55.

The spelling of 18385472764 in words is "eighteen billion, three hundred eighty-five million, four hundred seventy-two thousand, seven hundred sixty-four".