17983802844 has 96 divisors (see below), whose sum is σ = 53357068800. Its totient is φ = 5131313280.

The previous prime is 17983802777. The next prime is 17983802873. The reversal of 17983802844 is 44820838971.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 559687 + ... + 590945.

It is an arithmetic number, because the mean of its divisors is an integer number (555802800).

Almost surely, 2^17983802844 is an apocalyptic number.

17983802844 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 17983802844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26678534400).

17983802844 is an abundant number, since it is smaller than the sum of its proper divisors (35373265956).

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

17983802844 is a wasteful number, since it uses less digits than its factorization.

17983802844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32040 (or 32032 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 17983802844 in words is "seventeen billion, nine hundred eighty-three million, eight hundred two thousand, eight hundred forty-four".