1983188089 has 3 divisors (see below), whose sum is σ = 1983232623. Its totient is φ = 1983143556.

The previous prime is 1983188083. The next prime is 1983188093. The reversal of 1983188089 is 9808813891.

The square root of 1983188089 is 44533.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9808813891 = 281 ⋅34906811.

It can be written as a sum of positive squares in only one way, i.e., 1147515625 + 835672464 = 33875^2 + 28908^2 .

It is not a de Polignac number, because 1983188089 - 2⁷ = 1983187961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1983188083) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 22267 + ... + 66799.

It is an arithmetic number, because the mean of its divisors is an integer number (661077541).

Almost surely, 2^1983188089 is an apocalyptic number.

1983188089 is the 44533-rd square number.

1983188089 is the 22267-th centered octagonal number.

It is an amenable number.

1983188089 is a deficient number, since it is larger than the sum of its proper divisors (44534).

1983188089 is an frugal number, since it uses more digits than its factorization.

1983188089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89066 (or 44533 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 55.

The cubic root of 1983188089 is about 1256.3808315545.

The spelling of 1983188089 in words is "one billion, nine hundred eighty-three million, one hundred eighty-eight thousand, eighty-nine".