18419944924 has 48 divisors (see below), whose sum is σ = 34647963840. Its totient is φ = 8537195520.

The previous prime is 18419944903. The next prime is 18419944927. The reversal of 18419944924 is 42944991481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18419944927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7709122 + ... + 7711510.

It is an arithmetic number, because the mean of its divisors is an integer number (721832580).

Almost surely, 2^18419944924 is an apocalyptic number.

It is an amenable number.

18419944924 is a deficient number, since it is larger than the sum of its proper divisors (16228018916).

18419944924 is a wasteful number, since it uses less digits than its factorization.

18419944924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4078 (or 4076 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 55.

The spelling of 18419944924 in words is "eighteen billion, four hundred nineteen million, nine hundred forty-four thousand, nine hundred twenty-four".