18231806927 has 8 divisors (see below), whose sum is σ = 19308208752. Its totient is φ = 17155843200.

The previous prime is 18231806917. The next prime is 18231806939. The reversal of 18231806927 is 72960813281.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18231806927 - 2⁶ = 18231806863 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 (18231806917) 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, 21824 + ... + 192197.

It is an arithmetic number, because the mean of its divisors is an integer number (2413526094).

Almost surely, 2^18231806927 is an apocalyptic number.

18231806927 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

18231806927 is a deficient number, since it is larger than the sum of its proper divisors (1076401825).

18231806927 is a wasteful number, since it uses less digits than its factorization.

18231806927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219049.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 18231806927 in words is "eighteen billion, two hundred thirty-one million, eight hundred six thousand, nine hundred twenty-seven".