2865771493 has 4 divisors (see below), whose sum is σ = 3086215468. Its totient is φ = 2645327520.

The previous prime is 2865771487. The next prime is 2865771529. The reversal of 2865771493 is 3941775682.

2865771493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 377058724 + 2488712769 = 19418^2 + 49887^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2865771493 is a prime.

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 2865771493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2865771473) 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, 110221968 + ... + 110221993.

It is an arithmetic number, because the mean of its divisors is an integer number (771553867).

Almost surely, 2^2865771493 is an apocalyptic number.

It is an amenable number.

2865771493 is a deficient number, since it is larger than the sum of its proper divisors (220443975).

2865771493 is a wasteful number, since it uses less digits than its factorization.

2865771493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220443974.

The product of its digits is 2540160, while the sum is 52.

The square root of 2865771493 is about 53532.9010329162. The cubic root of 2865771493 is about 1420.4104303579.

The spelling of 2865771493 in words is "two billion, eight hundred sixty-five million, seven hundred seventy-one thousand, four hundred ninety-three".