2291775788 has 12 divisors (see below), whose sum is σ = 4011372960. Its totient is φ = 1145669232.

The previous prime is 2291775769. The next prime is 2291775791. The reversal of 2291775788 is 8875771922.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29831 + ... + 73982.

It is an arithmetic number, because the mean of its divisors is an integer number (334281080).

Almost surely, 2^2291775788 is an apocalyptic number.

It is an amenable number.

2291775788 is a deficient number, since it is larger than the sum of its proper divisors (1719597172).

2291775788 is a wasteful number, since it uses less digits than its factorization.

2291775788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109336 (or 109334 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 56.

The square root of 2291775788 is about 47872.4951094049. The cubic root of 2291775788 is about 1318.4309079710.

The spelling of 2291775788 in words is "two billion, two hundred ninety-one million, seven hundred seventy-five thousand, seven hundred eighty-eight".