18326461634 has 8 divisors (see below), whose sum is σ = 29604284220. Its totient is φ = 8458366896.

The previous prime is 18326461613. The next prime is 18326461649. The reversal of 18326461634 is 43616462381.

It can be written as a sum of positive squares in 2 ways, for example, as 18320434609 + 6027025 = 135353^2 + 2455^2 .

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

It is a Curzon 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, 352431929 + ... + 352431980.

Almost surely, 2^18326461634 is an apocalyptic number.

18326461634 is a deficient number, since it is larger than the sum of its proper divisors (11277822586).

18326461634 is a wasteful number, since it uses less digits than its factorization.

18326461634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704863924.

The product of its digits is 497664, while the sum is 44.

The spelling of 18326461634 in words is "eighteen billion, three hundred twenty-six million, four hundred sixty-one thousand, six hundred thirty-four".