18442024431 has 8 divisors (see below), whose sum is σ = 24636384000. Its totient is φ = 12271173912.

The previous prime is 18442024421. The next prime is 18442024481. The reversal of 18442024431 is 13442024481.

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

It is not a de Polignac number, because 18442024431 - 2²⁵ = 18408469999 is a prime.

It is a super-2 number, since 2×18442024431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18442024392 and 18442024401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18442024421) 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, 5875431 + ... + 5878568.

It is an arithmetic number, because the mean of its divisors is an integer number (3079548000).

Almost surely, 2^18442024431 is an apocalyptic number.

18442024431 is a deficient number, since it is larger than the sum of its proper divisors (6194359569).

18442024431 is a wasteful number, since it uses less digits than its factorization.

18442024431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11754525.

The product of its (nonzero) digits is 24576, while the sum is 33.

The spelling of 18442024431 in words is "eighteen billion, four hundred forty-two million, twenty-four thousand, four hundred thirty-one".