18408380326 has 64 divisors (see below), whose sum is σ = 34113623040. Its totient is φ = 7279050240.

The previous prime is 18408380293. The next prime is 18408380327. The reversal of 18408380326 is 62308380481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18408380327) 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 31 ways as a sum of consecutive naturals, for example, 1167145 + ... + 1182811.

It is an arithmetic number, because the mean of its divisors is an integer number (533025360).

Almost surely, 2^18408380326 is an apocalyptic number.

18408380326 is a deficient number, since it is larger than the sum of its proper divisors (15705242714).

18408380326 is a wasteful number, since it uses less digits than its factorization.

18408380326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15829.

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 18408380326 in words is "eighteen billion, four hundred eight million, three hundred eighty thousand, three hundred twenty-six".