3981365834 has 16 divisors (see below), whose sum is σ = 6217483848. Its totient is φ = 1910345472.

The previous prime is 3981365821. The next prime is 3981365837. The reversal of 3981365834 is 4385631893.

It can be written as a sum of positive squares in 4 ways, for example, as 3944216809 + 37149025 = 62803^2 + 6095^2 .

It is not an unprimeable number, because it can be changed into a prime (3981365837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363107 + ... + 373910.

Almost surely, 2^3981365834 is an apocalyptic number.

3981365834 is a deficient number, since it is larger than the sum of its proper divisors (2236118014).

3981365834 is a wasteful number, since it uses less digits than its factorization.

3981365834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737129.

The product of its digits is 1866240, while the sum is 50.

The square root of 3981365834 is about 63098.0652159795. The cubic root of 3981365834 is about 1584.9322230502.

The spelling of 3981365834 in words is "three billion, nine hundred eighty-one million, three hundred sixty-five thousand, eight hundred thirty-four".