2278422791 has 16 divisors (see below), whose sum is σ = 2436013440. Its totient is φ = 2124790560.

The previous prime is 2278422763. The next prime is 2278422823. The reversal of 2278422791 is 1972248722.

It is a cyclic number.

It is not a de Polignac number, because 2278422791 - 2²⁶ = 2211313927 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 (2278422721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 459596 + ... + 464526.

It is an arithmetic number, because the mean of its divisors is an integer number (152250840).

Almost surely, 2^2278422791 is an apocalyptic number.

2278422791 is a deficient number, since it is larger than the sum of its proper divisors (157590649).

2278422791 is a wasteful number, since it uses less digits than its factorization.

2278422791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5326.

The product of its digits is 225792, while the sum is 44.

The square root of 2278422791 is about 47732.8271842345. The cubic root of 2278422791 is about 1315.8653127787.

The spelling of 2278422791 in words is "two billion, two hundred seventy-eight million, four hundred twenty-two thousand, seven hundred ninety-one".