17918242944 has 128 divisors (see below), whose sum is σ = 54441953280. Its totient is φ = 5115048960.

The previous prime is 17918242939. The next prime is 17918242967. The reversal of 17918242944 is 44924281971.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4252999 + ... + 4257209.

It is an arithmetic number, because the mean of its divisors is an integer number (425327760).

Almost surely, 2^17918242944 is an apocalyptic number.

17918242944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17918242944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27220976640).

17918242944 is an abundant number, since it is smaller than the sum of its proper divisors (36523710336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17918242944 is a wasteful number, since it uses less digits than its factorization.

17918242944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5818 (or 5806 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The spelling of 17918242944 in words is "seventeen billion, nine hundred eighteen million, two hundred forty-two thousand, nine hundred forty-four".