18017844604 has 24 divisors (see below), whose sum is σ = 34837574688. Its totient is φ = 8110333440.

The previous prime is 18017844557. The next prime is 18017844613. The reversal of 18017844604 is 40644871081.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5758617 + ... + 5761744.

It is an arithmetic number, because the mean of its divisors is an integer number (1451565612).

Almost surely, 2^18017844604 is an apocalyptic number.

It is an amenable number.

18017844604 is a deficient number, since it is larger than the sum of its proper divisors (16819730084).

18017844604 is a wasteful number, since it uses less digits than its factorization.

18017844604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11520405 (or 11520403 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 18017844604 in words is "eighteen billion, seventeen million, eight hundred forty-four thousand, six hundred four".