3881492817 has 4 divisors (see below), whose sum is σ = 5175323760. Its totient is φ = 2587661876.

The previous prime is 3881492803. The next prime is 3881492821. The reversal of 3881492817 is 7182941883.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3881492817 - 2⁶ = 3881492753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3881492817.

It is not an unprimeable number, because it can be changed into a prime (3881492827) 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 3 ways as a sum of consecutive naturals, for example, 646915467 + ... + 646915472.

It is an arithmetic number, because the mean of its divisors is an integer number (1293830940).

Almost surely, 2^3881492817 is an apocalyptic number.

It is an amenable number.

3881492817 is a deficient number, since it is larger than the sum of its proper divisors (1293830943).

3881492817 is a wasteful number, since it uses less digits than its factorization.

3881492817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293830942.

The product of its digits is 774144, while the sum is 51.

The square root of 3881492817 is about 62301.6277235194. The cubic root of 3881492817 is about 1571.5671016131.

The spelling of 3881492817 in words is "three billion, eight hundred eighty-one million, four hundred ninety-two thousand, eight hundred seventeen".