3868191 has 12 divisors (see below), whose sum is σ = 5881720. Its totient is φ = 2442960.

The previous prime is 3868187. The next prime is 3868201. The reversal of 3868191 is 1918683.

It is not a de Polignac number, because 3868191 - 2² = 3868187 is a prime.

It is a super-2 number, since 2×3868191² = 29925803224962, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3868121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11140 + ... + 11481.

Almost surely, 2^3868191 is an apocalyptic number.

3868191 is a deficient number, since it is larger than the sum of its proper divisors (2013529).

3868191 is a wasteful number, since it uses less digits than its factorization.

3868191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22646 (or 22643 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 3868191 is about 1966.7717203580. The cubic root of 3868191 is about 156.9769801401.

The spelling of 3868191 in words is "three million, eight hundred sixty-eight thousand, one hundred ninety-one".