18111151983 has 8 divisors (see below), whose sum is σ = 24709788928. Its totient is φ = 11793308184.

The previous prime is 18111151957. The next prime is 18111151999. The reversal of 18111151983 is 38915111181.

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

It is not a de Polignac number, because 18111151983 - 2⁵ = 18111151951 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 (18111151783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70198135 + ... + 70198392.

It is an arithmetic number, because the mean of its divisors is an integer number (3088723616).

Almost surely, 2^18111151983 is an apocalyptic number.

18111151983 is a deficient number, since it is larger than the sum of its proper divisors (6598636945).

18111151983 is a wasteful number, since it uses less digits than its factorization.

18111151983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140396573.

The product of its digits is 8640, while the sum is 39.

The spelling of 18111151983 in words is "eighteen billion, one hundred eleven million, one hundred fifty-one thousand, nine hundred eighty-three".