18419944922 has 16 divisors (see below), whose sum is σ = 27687290400. Its totient is φ = 9190865040.

The previous prime is 18419944903. The next prime is 18419944927. The reversal of 18419944922 is 22944991481.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 3673397 + ... + 3678407.

It is an arithmetic number, because the mean of its divisors is an integer number (1730455650).

Almost surely, 2^18419944922 is an apocalyptic number.

18419944922 is a deficient number, since it is larger than the sum of its proper divisors (9267345478).

18419944922 is a wasteful number, since it uses less digits than its factorization.

18419944922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8461.

The product of its digits is 1492992, while the sum is 53.

The spelling of 18419944922 in words is "eighteen billion, four hundred nineteen million, nine hundred forty-four thousand, nine hundred twenty-two".