2864187812 has 12 divisors (see below), whose sum is σ = 5307171660. Its totient is φ = 1347853056.

The previous prime is 2864187811. The next prime is 2864187841. The reversal of 2864187812 is 2187814682.

It can be written as a sum of positive squares in 2 ways, for example, as 1726070116 + 1138117696 = 41546^2 + 33736^2 .

It is not an unprimeable number, because it can be changed into a prime (2864187811) 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 3 ways as a sum of consecutive naturals, for example, 21060137 + ... + 21060272.

It is an arithmetic number, because the mean of its divisors is an integer number (442264305).

Almost surely, 2^2864187812 is an apocalyptic number.

It is an amenable number.

2864187812 is a deficient number, since it is larger than the sum of its proper divisors (2442983848).

2864187812 is a wasteful number, since it uses less digits than its factorization.

2864187812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42120430 (or 42120428 counting only the distinct ones).

The product of its digits is 344064, while the sum is 47.

The square root of 2864187812 is about 53518.1073282679. The cubic root of 2864187812 is about 1420.1487333463.

The spelling of 2864187812 in words is "two billion, eight hundred sixty-four million, one hundred eighty-seven thousand, eight hundred twelve".