2865385133 has 8 divisors (see below), whose sum is σ = 3114111000. Its totient is φ = 2620703808.

The previous prime is 2865385129. The next prime is 2865385151. The reversal of 2865385133 is 3315835682.

It can be written as a sum of positive squares in 4 ways, for example, as 550043209 + 2315341924 = 23453^2 + 48118^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2865385133 - 2² = 2865385129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2865385153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009658 + ... + 1012491.

It is an arithmetic number, because the mean of its divisors is an integer number (389263875).

Almost surely, 2^2865385133 is an apocalyptic number.

It is an amenable number.

2865385133 is a deficient number, since it is larger than the sum of its proper divisors (248725867).

2865385133 is a wasteful number, since it uses less digits than its factorization.

2865385133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022271.

The product of its digits is 518400, while the sum is 44.

The square root of 2865385133 is about 53529.2922893625. The cubic root of 2865385133 is about 1420.3465947916.

The spelling of 2865385133 in words is "two billion, eight hundred sixty-five million, three hundred eighty-five thousand, one hundred thirty-three".