18528850530 has 24 divisors (see below), whose sum is σ = 48175011612. Its totient is φ = 4941026784.

The previous prime is 18528850507. The next prime is 18528850573. The reversal of 18528850530 is 3505882581.

18528850530 is a `hidden beast` number, since 18 + 5 + 28 + 85 + 0 + 530 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16104371409 + 2424479121 = 126903^2 + 49239^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102937969 + ... + 102938148.

Almost surely, 2^18528850530 is an apocalyptic number.

18528850530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18528850530 is an abundant number, since it is smaller than the sum of its proper divisors (29646161082).

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

18528850530 is a wasteful number, since it uses less digits than its factorization.

18528850530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205876130 (or 205876127 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The spelling of 18528850530 in words is "eighteen billion, five hundred twenty-eight million, eight hundred fifty thousand, five hundred thirty".