191122493 has 2 divisors, whose sum is σ = 191122494. Its totient is φ = 191122492.

The previous prime is 191122469. The next prime is 191122513. The reversal of 191122493 is 394221191.

191122493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171426649 + 19695844 = 13093^2 + 4438^2 .

It is a cyclic number.

It is not a de Polignac number, because 191122493 - 2⁶ = 191122429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193122493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95561246 + 95561247.

It is an arithmetic number, because the mean of its divisors is an integer number (95561247).

Almost surely, 2^191122493 is an apocalyptic number.

It is an amenable number.

191122493 is a deficient number, since it is larger than the sum of its proper divisors (1).

191122493 is an equidigital number, since it uses as much as digits as its factorization.

191122493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The square root of 191122493 is about 13824.7058919892. The cubic root of 191122493 is about 576.0196079439.

The spelling of 191122493 in words is "one hundred ninety-one million, one hundred twenty-two thousand, four hundred ninety-three".