2869813778 has 32 divisors (see below), whose sum is σ = 4902170112. Its totient is φ = 1250524800.

The previous prime is 2869813757. The next prime is 2869813801. The reversal of 2869813778 is 8773189682.

It is a super-2 number, since 2×2869813778² = 16471662240797266568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10376 + ... + 76467.

It is an arithmetic number, because the mean of its divisors is an integer number (153192816).

Almost surely, 2^2869813778 is an apocalyptic number.

2869813778 is a deficient number, since it is larger than the sum of its proper divisors (2032356334).

2869813778 is a wasteful number, since it uses less digits than its factorization.

2869813778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86930.

The product of its digits is 8128512, while the sum is 59.

The square root of 2869813778 is about 53570.6428746193. The cubic root of 2869813778 is about 1421.0779651177.

The spelling of 2869813778 in words is "two billion, eight hundred sixty-nine million, eight hundred thirteen thousand, seven hundred seventy-eight".