18563818382 has 8 divisors (see below), whose sum is σ = 28121428152. Its totient is φ = 9190009000.

The previous prime is 18563818379. The next prime is 18563818391. The reversal of 18563818382 is 28381836581.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 45949844 + ... + 45950247.

It is an arithmetic number, because the mean of its divisors is an integer number (3515178519).

Almost surely, 2^18563818382 is an apocalyptic number.

18563818382 is a deficient number, since it is larger than the sum of its proper divisors (9557609770).

18563818382 is a wasteful number, since it uses less digits than its factorization.

18563818382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91900194.

The product of its digits is 2211840, while the sum is 53.

The spelling of 18563818382 in words is "eighteen billion, five hundred sixty-three million, eight hundred eighteen thousand, three hundred eighty-two".