17983007940 has 24 divisors (see below), whose sum is σ = 50352422400. Its totient is φ = 4795468768.

The previous prime is 17983007927. The next prime is 17983007947. The reversal of 17983007940 is 4970038971.

It is a self number, because there is not a number n which added to its sum of digits gives 17983007940.

It is not an unprimeable number, because it can be changed into a prime (17983007947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149858340 + ... + 149858459.

It is an arithmetic number, because the mean of its divisors is an integer number (2098017600).

Almost surely, 2^17983007940 is an apocalyptic number.

17983007940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17983007940 is an abundant number, since it is smaller than the sum of its proper divisors (32369414460).

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

17983007940 is a wasteful number, since it uses less digits than its factorization.

17983007940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299716811 (or 299716809 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The spelling of 17983007940 in words is "seventeen billion, nine hundred eighty-three million, seven thousand, nine hundred forty".