191094133 has 2 divisors, whose sum is σ = 191094134. Its totient is φ = 191094132.

The previous prime is 191094091. The next prime is 191094173. The reversal of 191094133 is 331490191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149646289 + 41447844 = 12233^2 + 6438^2 .

It is a cyclic number.

It is not a de Polignac number, because 191094133 - 2¹⁷ = 190963061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 191094095 and 191094104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191094173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95547066 + 95547067.

It is an arithmetic number, because the mean of its divisors is an integer number (95547067).

Almost surely, 2^191094133 is an apocalyptic number.

It is an amenable number.

191094133 is a deficient number, since it is larger than the sum of its proper divisors (1).

191094133 is an equidigital number, since it uses as much as digits as its factorization.

191094133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 191094133 is about 13823.6801539966. The cubic root of 191094133 is about 575.9911153545.

The spelling of 191094133 in words is "one hundred ninety-one million, ninety-four thousand, one hundred thirty-three".