18285020384 has 24 divisors (see below), whose sum is σ = 36535931208. Its totient is φ = 9006053760.

The previous prime is 18285020359. The next prime is 18285020393. The reversal of 18285020384 is 48302058281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4262087 + ... + 4266374.

It is an arithmetic number, because the mean of its divisors is an integer number (1522330467).

Almost surely, 2^18285020384 is an apocalyptic number.

It is an amenable number.

18285020384 is a deficient number, since it is larger than the sum of its proper divisors (18250910824).

18285020384 is an equidigital number, since it uses as much as digits as its factorization.

18285020384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8528538 (or 8528530 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 41.

The spelling of 18285020384 in words is "eighteen billion, two hundred eighty-five million, twenty thousand, three hundred eighty-four".