2278357889 has 2 divisors, whose sum is σ = 2278357890. Its totient is φ = 2278357888.

The previous prime is 2278357883. The next prime is 2278357937. The reversal of 2278357889 is 9887538722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1586667889 + 691690000 = 39833^2 + 26300^2 .

It is a cyclic number.

It is not a de Polignac number, because 2278357889 - 2¹² = 2278353793 is a prime.

It is not a weakly prime, because it can be changed into another prime (2278357883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139178944 + 1139178945.

It is an arithmetic number, because the mean of its divisors is an integer number (1139178945).

Almost surely, 2^2278357889 is an apocalyptic number.

It is an amenable number.

2278357889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278357889 is an equidigital number, since it uses as much as digits as its factorization.

2278357889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13547520, while the sum is 59.

The square root of 2278357889 is about 47732.1473327987. The cubic root of 2278357889 is about 1315.8528183020.

The spelling of 2278357889 in words is "two billion, two hundred seventy-eight million, three hundred fifty-seven thousand, eight hundred eighty-nine".