2861339860 has 12 divisors (see below), whose sum is σ = 6008813748. Its totient is φ = 1144535936.

The previous prime is 2861339851. The next prime is 2861339917. The reversal of 2861339860 is 689331682.

It can be written as a sum of positive squares in 2 ways, for example, as 1453439376 + 1407900484 = 38124^2 + 37522^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2861339860.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71533477 + ... + 71533516.

It is an arithmetic number, because the mean of its divisors is an integer number (500734479).

Almost surely, 2^2861339860 is an apocalyptic number.

2861339860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2861339860 is an abundant number, since it is smaller than the sum of its proper divisors (3147473888).

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

2861339860 is a wasteful number, since it uses less digits than its factorization.

2861339860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143067002 (or 143067000 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 2861339860 is about 53491.4933423998. The cubic root of 2861339860 is about 1419.6778777366.

The spelling of 2861339860 in words is "two billion, eight hundred sixty-one million, three hundred thirty-nine thousand, eight hundred sixty".