2808923107 has 4 divisors (see below), whose sum is σ = 2974153896. Its totient is φ = 2643692320.

The previous prime is 2808923071. The next prime is 2808923119. The reversal of 2808923107 is 7013298082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2808923107 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2808923107.

It is not an unprimeable number, because it can be changed into a prime (2808923137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82615369 + ... + 82615402.

It is an arithmetic number, because the mean of its divisors is an integer number (743538474).

Almost surely, 2^2808923107 is an apocalyptic number.

2808923107 is a deficient number, since it is larger than the sum of its proper divisors (165230789).

2808923107 is a wasteful number, since it uses less digits than its factorization.

2808923107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165230788.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 2808923107 is about 52999.2745893753. The cubic root of 2808923107 is about 1410.9553920986.

The spelling of 2808923107 in words is "two billion, eight hundred eight million, nine hundred twenty-three thousand, one hundred seven".