18131110867 has 16 divisors (see below), whose sum is σ = 19223424000. Its totient is φ = 17052837984.

The previous prime is 18131110859. The next prime is 18131110871. The reversal of 18131110867 is 76801113181.

It is a cyclic number.

It is not a de Polignac number, because 18131110867 - 2³ = 18131110859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18131110807) 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, 3431934 + ... + 3437212.

It is an arithmetic number, because the mean of its divisors is an integer number (1201464000).

Almost surely, 2^18131110867 is an apocalyptic number.

18131110867 is a deficient number, since it is larger than the sum of its proper divisors (1092313133).

18131110867 is a wasteful number, since it uses less digits than its factorization.

18131110867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6570.

The product of its (nonzero) digits is 8064, while the sum is 37.

The spelling of 18131110867 in words is "eighteen billion, one hundred thirty-one million, one hundred ten thousand, eight hundred sixty-seven".