1983989874 has 16 divisors (see below), whose sum is σ = 3985012512. Its totient is φ = 658491168.

The previous prime is 1983989807. The next prime is 1983989881. The reversal of 1983989874 is 4789893891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 708184 + ... + 710979.

It is an arithmetic number, because the mean of its divisors is an integer number (249063282).

Almost surely, 2^1983989874 is an apocalyptic number.

1983989874 is an abundant number, since it is smaller than the sum of its proper divisors (2001022638).

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

1983989874 is a wasteful number, since it uses less digits than its factorization.

1983989874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419401.

The product of its digits is 31352832, while the sum is 66.

The square root of 1983989874 is about 44542.0012347896. The cubic root of 1983989874 is about 1256.5501232096.

The spelling of 1983989874 in words is "one billion, nine hundred eighty-three million, nine hundred eighty-nine thousand, eight hundred seventy-four".