18424844375 has 40 divisors (see below), whose sum is σ = 27860706720. Its totient is φ = 11890944000.

The previous prime is 18424844371. The next prime is 18424844381. The reversal of 18424844375 is 57344842481.

It is a happy number.

It is not a de Polignac number, because 18424844375 - 2² = 18424844371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18424844371) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 49490 + ... + 198239.

It is an arithmetic number, because the mean of its divisors is an integer number (696517668).

Almost surely, 2^18424844375 is an apocalyptic number.

18424844375 is a deficient number, since it is larger than the sum of its proper divisors (9435862345).

18424844375 is an equidigital number, since it uses as much as digits as its factorization.

18424844375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247773 (or 247758 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 50.

The spelling of 18424844375 in words is "eighteen billion, four hundred twenty-four million, eight hundred forty-four thousand, three hundred seventy-five".