18231114643 has 8 divisors (see below), whose sum is σ = 21030285312. Its totient is φ = 15480625416.

The previous prime is 18231114623. The next prime is 18231114647. The reversal of 18231114643 is 34641113281.

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 18231114643 - 2¹³ = 18231106451 is a prime.

It is a super-2 number, since 2×18231114643² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18231114599 and 18231114608.

It is not an unprimeable number, because it can be changed into a prime (18231114647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12169555 + ... + 12171052.

It is an arithmetic number, because the mean of its divisors is an integer number (2628785664).

Almost surely, 2^18231114643 is an apocalyptic number.

18231114643 is a deficient number, since it is larger than the sum of its proper divisors (2799170669).

18231114643 is a wasteful number, since it uses less digits than its factorization.

18231114643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24340721.

The product of its digits is 13824, while the sum is 34.

The spelling of 18231114643 in words is "eighteen billion, two hundred thirty-one million, one hundred fourteen thousand, six hundred forty-three".