18450770815 has 16 divisors (see below), whose sum is σ = 22245220800. Its totient is φ = 14691156480.

The previous prime is 18450770801. The next prime is 18450770869. The reversal of 18450770815 is 51807705481.

It is not a de Polignac number, because 18450770815 - 2⁷ = 18450770687 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3068542 + ... + 3074548.

It is an arithmetic number, because the mean of its divisors is an integer number (1390326300).

Almost surely, 2^18450770815 is an apocalyptic number.

18450770815 is a deficient number, since it is larger than the sum of its proper divisors (3794449985).

18450770815 is a wasteful number, since it uses less digits than its factorization.

18450770815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8802.

The product of its (nonzero) digits is 313600, while the sum is 46.

The spelling of 18450770815 in words is "eighteen billion, four hundred fifty million, seven hundred seventy thousand, eight hundred fifteen".