2865163785 has 32 divisors (see below), whose sum is σ = 5012088192. Its totient is φ = 1386094080.

The previous prime is 2865163753. The next prime is 2865163789. The reversal of 2865163785 is 5873615682.

It is a happy number.

2865163785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2865163785 - 2⁵ = 2865163753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2865163789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56407 + ... + 94403.

It is an arithmetic number, because the mean of its divisors is an integer number (156627756).

Almost surely, 2^2865163785 is an apocalyptic number.

It is an amenable number.

2865163785 is a deficient number, since it is larger than the sum of its proper divisors (2146924407).

2865163785 is a wasteful number, since it uses less digits than its factorization.

2865163785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38473.

The product of its digits is 2419200, while the sum is 51.

The square root of 2865163785 is about 53527.2247085537. The cubic root of 2865163785 is about 1420.3100204209.

The spelling of 2865163785 in words is "two billion, eight hundred sixty-five million, one hundred sixty-three thousand, seven hundred eighty-five".