191264167 has 2 divisors, whose sum is σ = 191264168. Its totient is φ = 191264166.

The previous prime is 191264149. The next prime is 191264173. The reversal of 191264167 is 761462191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 191264167 - 2⁷ = 191264039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191264267) 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 as a sum of consecutive naturals, namely, 95632083 + 95632084.

It is an arithmetic number, because the mean of its divisors is an integer number (95632084).

Almost surely, 2^191264167 is an apocalyptic number.

191264167 is a deficient number, since it is larger than the sum of its proper divisors (1).

191264167 is an equidigital number, since it uses as much as digits as its factorization.

191264167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 191264167 is about 13829.8288854201. The cubic root of 191264167 is about 576.1619021076.

The spelling of 191264167 in words is "one hundred ninety-one million, two hundred sixty-four thousand, one hundred sixty-seven".