18386520052 has 24 divisors (see below), whose sum is σ = 32492275200. Its totient is φ = 9103093440.

The previous prime is 18386520037. The next prime is 18386520079. The reversal of 18386520052 is 25002568381.

It is a junction number, because it is equal to n+sod(n) for n = 18386519987 and 18386520014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1035949 + ... + 1053547.

It is an arithmetic number, because the mean of its divisors is an integer number (1353844800).

Almost surely, 2^18386520052 is an apocalyptic number.

It is an amenable number.

18386520052 is a deficient number, since it is larger than the sum of its proper divisors (14105755148).

18386520052 is a wasteful number, since it uses less digits than its factorization.

18386520052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20151 (or 20149 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 18386520052 in words is "eighteen billion, three hundred eighty-six million, five hundred twenty thousand, fifty-two".