536667191 has 2 divisors, whose sum is σ = 536667192. Its totient is φ = 536667190.

The previous prime is 536667151. The next prime is 536667193. The reversal of 536667191 is 191766635.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-536667191 is a prime.

Together with 536667193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (536667193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268333595 + 268333596.

It is an arithmetic number, because the mean of its divisors is an integer number (268333596).

Almost surely, 2^536667191 is an apocalyptic number.

536667191 is a deficient number, since it is larger than the sum of its proper divisors (1).

536667191 is an equidigital number, since it uses as much as digits as its factorization.

536667191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 44.

The square root of 536667191 is about 23166.0784553623. The cubic root of 536667191 is about 812.6465236655.

The spelling of 536667191 in words is "five hundred thirty-six million, six hundred sixty-seven thousand, one hundred ninety-one".