2174989889 has 2 divisors, whose sum is σ = 2174989890. Its totient is φ = 2174989888.

The previous prime is 2174989847. The next prime is 2174989897. The reversal of 2174989889 is 9889894712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1715616400 + 459373489 = 41420^2 + 21433^2 .

It is a cyclic number.

It is not a de Polignac number, because 2174989889 - 2⁸ = 2174989633 is a prime.

It is not a weakly prime, because it can be changed into another prime (2174989829) by changing a digit.

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 as a sum of consecutive naturals, namely, 1087494944 + 1087494945.

It is an arithmetic number, because the mean of its divisors is an integer number (1087494945).

Almost surely, 2^2174989889 is an apocalyptic number.

It is an amenable number.

2174989889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2174989889 is an equidigital number, since it uses as much as digits as its factorization.

2174989889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20901888, while the sum is 65.

The square root of 2174989889 is about 46636.7868640197. The cubic root of 2174989889 is about 1295.6441767612.

The spelling of 2174989889 in words is "two billion, one hundred seventy-four million, nine hundred eighty-nine thousand, eight hundred eighty-nine".