2276438391 has 32 divisors (see below), whose sum is σ = 3398443200. Its totient is φ = 1506003840.

The previous prime is 2276438387. The next prime is 2276438419. The reversal of 2276438391 is 1938346722.

2276438391 is a `hidden beast` number, since 227 + 6 + 4 + 38 + 391 = 666.

It is not a de Polignac number, because 2276438391 - 2² = 2276438387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2276438371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3443601 + ... + 3444261.

It is an arithmetic number, because the mean of its divisors is an integer number (106201350).

Almost surely, 2^2276438391 is an apocalyptic number.

2276438391 is a deficient number, since it is larger than the sum of its proper divisors (1122004809).

2276438391 is a wasteful number, since it uses less digits than its factorization.

2276438391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456 (or 1450 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 2276438391 is about 47712.0361229743. The cubic root of 2276438391 is about 1315.4831827101.

The spelling of 2276438391 in words is "two billion, two hundred seventy-six million, four hundred thirty-eight thousand, three hundred ninety-one".