3866738849 has 8 divisors (see below), whose sum is σ = 4073804640. Its totient is φ = 3660028416.

The previous prime is 3866738801. The next prime is 3866738851. The reversal of 3866738849 is 9488376683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3866738849 - 2²⁰ = 3865690273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3866738791 and 3866738800.

It is not an unprimeable number, because it can be changed into a prime (3866738879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66347 + ... + 110160.

It is an arithmetic number, because the mean of its divisors is an integer number (509225580).

Almost surely, 2^3866738849 is an apocalyptic number.

It is an amenable number.

3866738849 is a deficient number, since it is larger than the sum of its proper divisors (207065791).

3866738849 is a wasteful number, since it uses less digits than its factorization.

3866738849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177679.

The product of its digits is 41803776, while the sum is 62.

The square root of 3866738849 is about 62183.1074247661. The cubic root of 3866738849 is about 1569.5733419453.

The spelling of 3866738849 in words is "three billion, eight hundred sixty-six million, seven hundred thirty-eight thousand, eight hundred forty-nine".