2866395640 has 64 divisors (see below), whose sum is σ = 6506004960. Its totient is φ = 1136540160.

The previous prime is 2866395601. The next prime is 2866395667. The reversal of 2866395640 is 465936682.

It is a super-2 number, since 2×2866395640² = 16432447930022019200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3786142 + ... + 3786898.

Almost surely, 2^2866395640 is an apocalyptic number.

2866395640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2866395640 is an abundant number, since it is smaller than the sum of its proper divisors (3639609320).

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

2866395640 is a wasteful number, since it uses less digits than its factorization.

2866395640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472 (or 1468 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The square root of 2866395640 is about 53538.7302800505. The cubic root of 2866395640 is about 1420.5135416908.

The spelling of 2866395640 in words is "two billion, eight hundred sixty-six million, three hundred ninety-five thousand, six hundred forty".