18316806673 has 16 divisors (see below), whose sum is σ = 20533296960. Its totient is φ = 16192699200.

The previous prime is 18316806671. The next prime is 18316806733. The reversal of 18316806673 is 37660861381.

It is a cyclic number.

It is not a de Polignac number, because 18316806673 - 2¹ = 18316806671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18316806671) 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, 794083 + ... + 816823.

It is an arithmetic number, because the mean of its divisors is an integer number (1283331060).

Almost surely, 2^18316806673 is an apocalyptic number.

It is an amenable number.

18316806673 is a deficient number, since it is larger than the sum of its proper divisors (2216490287).

18316806673 is a wasteful number, since it uses less digits than its factorization.

18316806673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24768.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 18316806673 in words is "eighteen billion, three hundred sixteen million, eight hundred six thousand, six hundred seventy-three".