2542221889 has 2 divisors, whose sum is σ = 2542221890. Its totient is φ = 2542221888.

The previous prime is 2542221859. The next prime is 2542221911. The reversal of 2542221889 is 9881222452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1309860864 + 1232361025 = 36192^2 + 35105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542221889 - 2¹³ = 2542213697 is a prime.

It is not a weakly prime, because it can be changed into another prime (2542221859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271110944 + 1271110945.

It is an arithmetic number, because the mean of its divisors is an integer number (1271110945).

Almost surely, 2^2542221889 is an apocalyptic number.

It is an amenable number.

2542221889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2542221889 is an equidigital number, since it uses as much as digits as its factorization.

2542221889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 43.

The square root of 2542221889 is about 50420.4510987357. The cubic root of 2542221889 is about 1364.8067170318.

The spelling of 2542221889 in words is "two billion, five hundred forty-two million, two hundred twenty-one thousand, eight hundred eighty-nine".