18315044607 has 16 divisors (see below), whose sum is σ = 24479544320. Its totient is φ = 12180326400.

The previous prime is 18315044597. The next prime is 18315044611. The reversal of 18315044607 is 70644051381.

It is not a de Polignac number, because 18315044607 - 2⁶ = 18315044543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18315044617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2282232 + ... + 2290242.

It is an arithmetic number, because the mean of its divisors is an integer number (1529971520).

Almost surely, 2^18315044607 is an apocalyptic number.

18315044607 is a deficient number, since it is larger than the sum of its proper divisors (6164499713).

18315044607 is an equidigital number, since it uses as much as digits as its factorization.

18315044607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9774.

The product of its (nonzero) digits is 80640, while the sum is 39.

Adding to 18315044607 its reverse (70644051381), we get a palindrome (88959095988).

The spelling of 18315044607 in words is "eighteen billion, three hundred fifteen million, forty-four thousand, six hundred seven".