2542881889 has 2 divisors, whose sum is σ = 2542881890. Its totient is φ = 2542881888.

The previous prime is 2542881881. The next prime is 2542881893. The reversal of 2542881889 is 9881882452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2211350625 + 331531264 = 47025^2 + 18208^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542881889 - 2³ = 2542881881 is a prime.

It is not a weakly prime, because it can be changed into another prime (2542881881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271440944 + 1271440945.

It is an arithmetic number, because the mean of its divisors is an integer number (1271440945).

Almost surely, 2^2542881889 is an apocalyptic number.

It is an amenable number.

2542881889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2542881889 is an equidigital number, since it uses as much as digits as its factorization.

2542881889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2949120, while the sum is 55.

The square root of 2542881889 is about 50426.9956372576. The cubic root of 2542881889 is about 1364.9248151015.

The spelling of 2542881889 in words is "two billion, five hundred forty-two million, eight hundred eighty-one thousand, eight hundred eighty-nine".