18654608652 has 24 divisors (see below), whose sum is σ = 45818337600. Its totient is φ = 5890928976.

The previous prime is 18654608647. The next prime is 18654608653. The reversal of 18654608652 is 25680645681.

It is a junction number, because it is equal to n+sod(n) for n = 18654608595 and 18654608604.

It is not an unprimeable number, because it can be changed into a prime (18654608653) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 40909002 + ... + 40909457.

It is an arithmetic number, because the mean of its divisors is an integer number (1909097400).

Almost surely, 2^18654608652 is an apocalyptic number.

18654608652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18654608652 is an abundant number, since it is smaller than the sum of its proper divisors (27163728948).

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

18654608652 is a wasteful number, since it uses less digits than its factorization.

18654608652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81818485 (or 81818483 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 51.

The spelling of 18654608652 in words is "eighteen billion, six hundred fifty-four million, six hundred eight thousand, six hundred fifty-two".