18684965748 has 12 divisors (see below), whose sum is σ = 43598253440. Its totient is φ = 6228321912.

The previous prime is 18684965743. The next prime is 18684965777. The reversal of 18684965748 is 84756948681.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18684965743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778540228 + ... + 778540251.

Almost surely, 2^18684965748 is an apocalyptic number.

It is an amenable number.

18684965748 is an abundant number, since it is smaller than the sum of its proper divisors (24913287692).

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

18684965748 is a wasteful number, since it uses less digits than its factorization.

18684965748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557080486 (or 1557080484 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 66.

The spelling of 18684965748 in words is "eighteen billion, six hundred eighty-four million, nine hundred sixty-five thousand, seven hundred forty-eight".