2278981229 has 6 divisors (see below), whose sum is σ = 2651059854. Its totient is φ = 1953412440.

The previous prime is 2278981169. The next prime is 2278981303. The reversal of 2278981229 is 9221898722.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1936176004 + 342805225 = 44002^2 + 18515^2 .

It is not a de Polignac number, because 2278981229 - 2¹² = 2278977133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278981829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23254862 + ... + 23254959.

It is an arithmetic number, because the mean of its divisors is an integer number (441843309).

Almost surely, 2^2278981229 is an apocalyptic number.

It is an amenable number.

2278981229 is a deficient number, since it is larger than the sum of its proper divisors (372078625).

2278981229 is an equidigital number, since it uses as much as digits as its factorization.

2278981229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46509835 (or 46509828 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 2278981229 is about 47738.6764479285. The cubic root of 2278981229 is about 1315.9728095333.

The spelling of 2278981229 in words is "two billion, two hundred seventy-eight million, nine hundred eighty-one thousand, two hundred twenty-nine".