18525546648 has 96 divisors (see below), whose sum is σ = 58422967200. Its totient is φ = 5193137664.

The previous prime is 18525546619. The next prime is 18525546713. The reversal of 18525546648 is 84664552581.

18525546648 is a `hidden beast` number, since 1 + 8 + 52 + 5 + 546 + 6 + 48 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18525546594 and 18525546603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 320053 + ... + 373476.

It is an arithmetic number, because the mean of its divisors is an integer number (608572575).

Almost surely, 2^18525546648 is an apocalyptic number.

18525546648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18525546648 is an abundant number, since it is smaller than the sum of its proper divisors (39897420552).

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

18525546648 is a wasteful number, since it uses less digits than its factorization.

18525546648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693601 (or 693594 counting only the distinct ones).

The product of its digits is 9216000, while the sum is 54.

The spelling of 18525546648 in words is "eighteen billion, five hundred twenty-five million, five hundred forty-six thousand, six hundred forty-eight".