2868733561 has 4 divisors (see below), whose sum is σ = 3037482612. Its totient is φ = 2699984512.

The previous prime is 2868733547. The next prime is 2868733589. The reversal of 2868733561 is 1653378682.

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 2355257961 + 513475600 = 48531^2 + 22660^2 .

It is a cyclic number.

It is not a de Polignac number, because 2868733561 - 2²³ = 2860344953 is a prime.

It is a Smith number, since the sum of its digits (49) 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 not an unprimeable number, because it can be changed into a prime (2868733591) 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, 84374500 + ... + 84374533.

It is an arithmetic number, because the mean of its divisors is an integer number (759370653).

Almost surely, 2^2868733561 is an apocalyptic number.

It is an amenable number.

2868733561 is a deficient number, since it is larger than the sum of its proper divisors (168749051).

2868733561 is a wasteful number, since it uses less digits than its factorization.

2868733561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168749050.

The product of its digits is 1451520, while the sum is 49.

The square root of 2868733561 is about 53560.5597524895. The cubic root of 2868733561 is about 1420.8996416748.

The spelling of 2868733561 in words is "two billion, eight hundred sixty-eight million, seven hundred thirty-three thousand, five hundred sixty-one".