2793278889 has 12 divisors (see below), whose sum is σ = 4064188596. Its totient is φ = 1848592512.

The previous prime is 2793278881. The next prime is 2793278909. The reversal of 2793278889 is 9888723972.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1804805289 + 988473600 = 42483^2 + 31440^2 .

It is not a de Polignac number, because 2793278889 - 2³ = 2793278881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2793278881) 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 in 11 ways as a sum of consecutive naturals, for example, 1131484 + ... + 1133949.

It is an arithmetic number, because the mean of its divisors is an integer number (338682383).

Almost surely, 2^2793278889 is an apocalyptic number.

It is an amenable number.

2793278889 is a deficient number, since it is larger than the sum of its proper divisors (1270909707).

2793278889 is a wasteful number, since it uses less digits than its factorization.

2793278889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265576 (or 2265573 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 63.

The square root of 2793278889 is about 52851.4795346355. The cubic root of 2793278889 is about 1408.3310886402.

The spelling of 2793278889 in words is "two billion, seven hundred ninety-three million, two hundred seventy-eight thousand, eight hundred eighty-nine".