18373909052 has 12 divisors (see below), whose sum is σ = 32159280216. Its totient is φ = 9185543280.

The previous prime is 18373909049. The next prime is 18373909063. The reversal of 18373909052 is 25090937381.

It is a junction number, because it is equal to n+sod(n) for n = 18373908988 and 18373909006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323243 + ... + 375810.

It is an arithmetic number, because the mean of its divisors is an integer number (2679940018).

Almost surely, 2^18373909052 is an apocalyptic number.

It is an amenable number.

18373909052 is a deficient number, since it is larger than the sum of its proper divisors (13785371164).

18373909052 is a wasteful number, since it uses less digits than its factorization.

18373909052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705628 (or 705626 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 18373909052 in words is "eighteen billion, three hundred seventy-three million, nine hundred nine thousand, fifty-two".