229278495889 has 2 divisors, whose sum is σ = 229278495890. Its totient is φ = 229278495888.

The previous prime is 229278495881. The next prime is 229278495923. The reversal of 229278495889 is 988594872922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222602788864 + 6675707025 = 471808^2 + 81705^2 .

It is a cyclic number.

It is not a de Polignac number, because 229278495889 - 2³ = 229278495881 is a prime.

It is not a weakly prime, because it can be changed into another prime (229278495881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114639247944 + 114639247945.

It is an arithmetic number, because the mean of its divisors is an integer number (114639247945).

Almost surely, 2^229278495889 is an apocalyptic number.

It is an amenable number.

229278495889 is a deficient number, since it is larger than the sum of its proper divisors (1).

229278495889 is an equidigital number, since it uses as much as digits as its factorization.

229278495889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 418037760, while the sum is 73.

The spelling of 229278495889 in words is "two hundred twenty-nine billion, two hundred seventy-eight million, four hundred ninety-five thousand, eight hundred eighty-nine".