2868307778 has 16 divisors (see below), whose sum is σ = 4917827520. Its totient is φ = 1229092656.

The previous prime is 2868307693. The next prime is 2868307789. The reversal of 2868307778 is 8777038682.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131753 + ... + 151971.

It is an arithmetic number, because the mean of its divisors is an integer number (307364220).

Almost surely, 2^2868307778 is an apocalyptic number.

2868307778 is a deficient number, since it is larger than the sum of its proper divisors (2049519742).

2868307778 is a wasteful number, since it uses less digits than its factorization.

2868307778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30361.

The product of its (nonzero) digits is 6322176, while the sum is 56.

The square root of 2868307778 is about 53556.5848239038. The cubic root of 2868307778 is about 1420.8293406362.

The spelling of 2868307778 in words is "two billion, eight hundred sixty-eight million, three hundred seven thousand, seven hundred seventy-eight".