2861608036 has 27 divisors (see below), whose sum is σ = 5826941337. Its totient is φ = 1226082480.

The previous prime is 2861608033. The next prime is 2861608037. The reversal of 2861608036 is 6308061682.

The square root of 2861608036 is 53494.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2569881636 + 291726400 = 50694^2 + 17080^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2861608036.

It is not an unprimeable number, because it can be changed into a prime (2861608033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 747006 + ... + 750826.

Almost surely, 2^2861608036 is an apocalyptic number.

2861608036 is the 53494-th square number.

It is an amenable number.

2861608036 is an abundant number, since it is smaller than the sum of its proper divisors (2965333301).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2861608036 is an frugal number, since it uses more digits than its factorization.

2861608036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7660 (or 3830 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The cubic root of 2861608036 is about 1419.7222289449.

Multiplying 2861608036 by its product of nonzero digits (82944), we get a square (237353216937984 = 15406272²).

The spelling of 2861608036 in words is "two billion, eight hundred sixty-one million, six hundred eight thousand, thirty-six".