2291078168 has 32 divisors (see below), whose sum is σ = 4645252800. Its totient is φ = 1055212032.

The previous prime is 2291078149. The next prime is 2291078171. The reversal of 2291078168 is 8618701922.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172823 + ... + 185606.

It is an arithmetic number, because the mean of its divisors is an integer number (145164150).

Almost surely, 2^2291078168 is an apocalyptic number.

It is an amenable number.

2291078168 is an abundant number, since it is smaller than the sum of its proper divisors (2354174632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2291078168 is a wasteful number, since it uses less digits than its factorization.

2291078168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358499 (or 358495 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 2291078168 is about 47865.2083250454. The cubic root of 2291078168 is about 1318.2971169436.

The spelling of 2291078168 in words is "two billion, two hundred ninety-one million, seventy-eight thousand, one hundred sixty-eight".