191814461 has 2 divisors, whose sum is σ = 191814462. Its totient is φ = 191814460.

The previous prime is 191814433. The next prime is 191814479. The reversal of 191814461 is 164418191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186841561 + 4972900 = 13669^2 + 2230^2 .

It is a cyclic number.

It is not a de Polignac number, because 191814461 - 2¹⁰ = 191813437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191814421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95907230 + 95907231.

It is an arithmetic number, because the mean of its divisors is an integer number (95907231).

Almost surely, 2^191814461 is an apocalyptic number.

It is an amenable number.

191814461 is a deficient number, since it is larger than the sum of its proper divisors (1).

191814461 is an equidigital number, since it uses as much as digits as its factorization.

191814461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 35.

The square root of 191814461 is about 13849.7097803528. The cubic root of 191814461 is about 576.7139393830.

The spelling of 191814461 in words is "one hundred ninety-one million, eight hundred fourteen thousand, four hundred sixty-one".