2858943287281 has 9 divisors (see below), whose sum is σ = 2887702410369. Its totient is φ = 2830467834000.

The previous prime is 2858943287269. The next prime is 2858943287293. The reversal of 2858943287281 is 1827823498582.

The square root of 2858943287281 is 1690841.

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

It is an interprime number because it is at equal distance from previous prime (2858943287269) and next prime (2858943287293).

It can be written as a sum of positive squares in 4 ways, for example, as 2515265949681 + 343677337600 = 1585959^2 + 586240^2 .

It is not a de Polignac number, because 2858943287281 - 2⁷ = 2858943287153 is a prime.

It is a super-2 number, since 2×2858943287281² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2858943287261) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 170766571 + ... + 170783311.

Almost surely, 2^{2858943287281} is an apocalyptic number.

2858943287281 is the 1690841-st square number.

2858943287281 is the 845421-st centered octagonal number.

It is an amenable number.

2858943287281 is a deficient number, since it is larger than the sum of its proper divisors (28759123088).

2858943287281 is an frugal number, since it uses more digits than its factorization.

2858943287281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33684 (or 16842 counting only the distinct ones).

The product of its digits is 123863040, while the sum is 67.

The spelling of 2858943287281 in words is "two trillion, eight hundred fifty-eight billion, nine hundred forty-three million, two hundred eighty-seven thousand, two hundred eighty-one".