3891586981193 has 16 divisors (see below), whose sum is σ = 3953313029760. Its totient is φ = 3829969858176.

The previous prime is 3891586981159. The next prime is 3891586981201. The reversal of 3891586981193 is 3911896851983.

It is a cyclic number.

It is not a de Polignac number, because 3891586981193 - 2¹⁸ = 3891586719049 is a prime.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3891586981393) by changing a digit.

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, 532434023 + ... + 532441331.

It is an arithmetic number, because the mean of its divisors is an integer number (247082064360).

Almost surely, 2^{3891586981193} is an apocalyptic number.

It is an amenable number.

3891586981193 is a deficient number, since it is larger than the sum of its proper divisors (61726048567).

3891586981193 is a wasteful number, since it uses less digits than its factorization.

3891586981193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13616.

The product of its digits is 100776960, while the sum is 71.

The spelling of 3891586981193 in words is "three trillion, eight hundred ninety-one billion, five hundred eighty-six million, nine hundred eighty-one thousand, one hundred ninety-three".