18210719829604 has 9 divisors (see below), whose sum is σ = 31868774637721. Its totient is φ = 9105355647400.

The previous prime is 18210719829587. The next prime is 18210719829607. The reversal of 18210719829604 is 40692891701281.

The square root of 18210719829604 is 4267402.

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., 11978507156004 + 6232212673600 = 3460998^2 + 2496440^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18210719829607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7467954 + ... + 9601654.

Almost surely, 2^{18210719829604} is an apocalyptic number.

18210719829604 is the 4267402-nd square number.

It is an amenable number.

18210719829604 is a deficient number, since it is larger than the sum of its proper divisors (13658054808117).

18210719829604 is an frugal number, since it uses more digits than its factorization.

18210719829604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4267406 (or 2133703 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 58.

The spelling of 18210719829604 in words is "eighteen trillion, two hundred ten billion, seven hundred nineteen million, eight hundred twenty-nine thousand, six hundred four".