6191191 has 8 divisors (see below), whose sum is σ = 6297984. Its totient is φ = 6085560.

The previous prime is 6191153. The next prime is 6191197. The reversal of 6191191 is 1911916.

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 6191191 - 2¹¹ = 6189143 is a prime.

It is a Duffinian number.

6191191 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6191197) 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, 21736 + ... + 22018.

It is an arithmetic number, because the mean of its divisors is an integer number (787248).

Almost surely, 2^6191191 is an apocalyptic number.

6191191 is a deficient number, since it is larger than the sum of its proper divisors (106793).

6191191 is a wasteful number, since it uses less digits than its factorization.

6191191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581.

The product of its digits is 486, while the sum is 28.

The square root of 6191191 is about 2488.2104010714. The cubic root of 6191191 is about 183.6220087596.

Subtracting from 6191191 its reverse (1911916), we obtain a triangular number (4279275 = T₂₉₂₅).

The spelling of 6191191 in words is "six million, one hundred ninety-one thousand, one hundred ninety-one".