1983445800 has 96 divisors (see below), whose sum is σ = 7027080000. Its totient is φ = 453358080.

The previous prime is 1983445799. The next prime is 1983445801. The reversal of 1983445800 is 85443891.

It is an interprime number because it is at equal distance from previous prime (1983445799) and next prime (1983445801).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1983445801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231925 + ... + 240324.

It is an arithmetic number, because the mean of its divisors is an integer number (73198750).

Almost surely, 2^1983445800 is an apocalyptic number.

1983445800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1983445800 is an abundant number, since it is smaller than the sum of its proper divisors (5043634200).

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

1983445800 is a wasteful number, since it uses less digits than its factorization.

1983445800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472275 (or 472266 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 1983445800 is about 44535.8933894898. The cubic root of 1983445800 is about 1256.4352505207.

The spelling of 1983445800 in words is "one billion, nine hundred eighty-three million, four hundred forty-five thousand, eight hundred".