18386725050 has 72 divisors (see below), whose sum is σ = 49695006816. Its totient is φ = 4873746720.

The previous prime is 18386725043. The next prime is 18386725081. The reversal of 18386725050 is 5052768381.

18386725050 is a `hidden beast` number, since 1 + 83 + 8 + 67 + 2 + 505 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 18386724987 and 18386725005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 47184 + ... + 197483.

It is an arithmetic number, because the mean of its divisors is an integer number (690208428).

Almost surely, 2^18386725050 is an apocalyptic number.

18386725050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18386725050 is an abundant number, since it is smaller than the sum of its proper divisors (31308281766).

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

18386725050 is a wasteful number, since it uses less digits than its factorization.

18386725050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244852 (or 244844 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 18386725050 in words is "eighteen billion, three hundred eighty-six million, seven hundred twenty-five thousand, fifty".