18785185619344 has 45 divisors (see below), whose sum is σ = 36491503958721. Its totient is φ = 9368087310720.

The previous prime is 18785185619309. The next prime is 18785185619351. The reversal of 18785185619344 is 44391658158781.

The square root of 18785185619344 is 4334188.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 16246542490000 + 2538643129344 = 4030700^2 + 1593312^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7922894479 + ... + 7922896849.

Almost surely, 2^{18785185619344} is an apocalyptic number.

18785185619344 is the 4334188-th square number.

It is an amenable number.

18785185619344 is a deficient number, since it is larger than the sum of its proper divisors (17706318339377).

18785185619344 is an frugal number, since it uses more digits than its factorization.

18785185619344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5664 (or 2830 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 70.

The spelling of 18785185619344 in words is "eighteen trillion, seven hundred eighty-five billion, one hundred eighty-five million, six hundred nineteen thousand, three hundred forty-four".