2881889 has 2 divisors, whose sum is σ = 2881890. Its totient is φ = 2881888.

The previous prime is 2881883. The next prime is 2881897. The reversal of 2881889 is 9881882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2512225 + 369664 = 1585^2 + 608^2 .

It is a cyclic number.

It is not a de Polignac number, because 2881889 - 2⁴ = 2881873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2881883) 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, 1440944 + 1440945.

It is an arithmetic number, because the mean of its divisors is an integer number (1440945).

2^2881889 is an apocalyptic number.

It is an amenable number.

2881889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2881889 is an equidigital number, since it uses as much as digits as its factorization.

2881889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73728, while the sum is 44.

The square root of 2881889 is about 1697.6127355790. The cubic root of 2881889 is about 142.3068317305.

The spelling of 2881889 in words is "two million, eight hundred eighty-one thousand, eight hundred eighty-nine".