3866849281 has 2 divisors, whose sum is σ = 3866849282. Its totient is φ = 3866849280.

The previous prime is 3866849269. The next prime is 3866849333. The reversal of 3866849281 is 1829486683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3456381681 + 410467600 = 58791^2 + 20260^2 .

It is a cyclic number.

It is not a de Polignac number, because 3866849281 - 2¹¹ = 3866847233 is a prime.

It is a super-2 number, since 2×3866849281² = 29905046723940433922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3866849081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1933424640 + 1933424641.

It is an arithmetic number, because the mean of its divisors is an integer number (1933424641).

Almost surely, 2^3866849281 is an apocalyptic number.

It is an amenable number.

3866849281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3866849281 is an equidigital number, since it uses as much as digits as its factorization.

3866849281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3981312, while the sum is 55.

The square root of 3866849281 is about 62183.9953766240. The cubic root of 3866849281 is about 1569.5882838623.

The spelling of 3866849281 in words is "three billion, eight hundred sixty-six million, eight hundred forty-nine thousand, two hundred eighty-one".