18219120986804 has 24 divisors (see below), whose sum is σ = 32003024628960. Its totient is φ = 9075413549664.

The previous prime is 18219120986783. The next prime is 18219120986839. The reversal of 18219120986804 is 40868902191281.

It is a congruent number.

It is an unprimeable number.

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, 3522662 + ... + 6989090.

It is an arithmetic number, because the mean of its divisors is an integer number (1333459359540).

Almost surely, 2^{18219120986804} is an apocalyptic number.

It is an amenable number.

18219120986804 is a deficient number, since it is larger than the sum of its proper divisors (13783903642156).

18219120986804 is a wasteful number, since it uses less digits than its factorization.

18219120986804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471359 (or 3471357 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 59.

The spelling of 18219120986804 in words is "eighteen trillion, two hundred nineteen billion, one hundred twenty million, nine hundred eighty-six thousand, eight hundred four".