18723364364 has 12 divisors (see below), whose sum is σ = 32921177688. Its totient is φ = 9317313600.

The previous prime is 18723364277. The next prime is 18723364369. The reversal of 18723364364 is 46346332781.

It is not an unprimeable number, because it can be changed into a prime (18723364369) 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, 11091197 + ... + 11092884.

It is an arithmetic number, because the mean of its divisors is an integer number (2743431474).

Almost surely, 2^18723364364 is an apocalyptic number.

It is an amenable number.

18723364364 is a deficient number, since it is larger than the sum of its proper divisors (14197813324).

18723364364 is a wasteful number, since it uses less digits than its factorization.

18723364364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22184296 (or 22184294 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 47.

The spelling of 18723364364 in words is "eighteen billion, seven hundred twenty-three million, three hundred sixty-four thousand, three hundred sixty-four".