18780023792 has 40 divisors (see below), whose sum is σ = 37115422080. Its totient is φ = 9202818240.

The previous prime is 18780023791. The next prime is 18780023797. The reversal of 18780023792 is 29732008781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18780023791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282413 + ... + 342515.

It is an arithmetic number, because the mean of its divisors is an integer number (927885552).

Almost surely, 2^18780023792 is an apocalyptic number.

It is an amenable number.

18780023792 is a deficient number, since it is larger than the sum of its proper divisors (18335398288).

18780023792 is a wasteful number, since it uses less digits than its factorization.

18780023792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60501 (or 60495 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 18780023792 in words is "eighteen billion, seven hundred eighty million, twenty-three thousand, seven hundred ninety-two".