18431112069 has 12 divisors (see below), whose sum is σ = 26639305056. Its totient is φ = 12279752232.

The previous prime is 18431112067. The next prime is 18431112097. The reversal of 18431112069 is 96021113481.

18431112069 is a `hidden beast` number, since 1 + 8 + 431 + 11 + 206 + 9 = 666.

It is not a de Polignac number, because 18431112069 - 2¹ = 18431112067 is a prime.

It is a super-2 number, since 2×18431112069² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18431112061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 622719 + ... + 651644.

It is an arithmetic number, because the mean of its divisors is an integer number (2219942088).

Almost surely, 2^18431112069 is an apocalyptic number.

It is an amenable number.

18431112069 is a deficient number, since it is larger than the sum of its proper divisors (8208192987).

18431112069 is a wasteful number, since it uses less digits than its factorization.

18431112069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275976 (or 1275973 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 18431112069 in words is "eighteen billion, four hundred thirty-one million, one hundred twelve thousand, sixty-nine".