191461 has 2 divisors, whose sum is σ = 191462. Its totient is φ = 191460.

The previous prime is 191459. The next prime is 191467. The reversal of 191461 is 164191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184900 + 6561 = 430^2 + 81^2 .

It is an emirp because it is prime and its reverse (164191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 191461 - 2¹ = 191459 is a prime.

Together with 191459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95730 + 95731.

It is an arithmetic number, because the mean of its divisors is an integer number (95731).

2¹⁹¹⁴⁶¹ is an apocalyptic number.

It is an amenable number.

191461 is a deficient number, since it is larger than the sum of its proper divisors (1).

191461 is an equidigital number, since it uses as much as digits as its factorization.

191461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 22.

The square root of 191461 is about 437.5625669547. The cubic root of 191461 is about 57.6359480142.

The spelling of 191461 in words is "one hundred ninety-one thousand, four hundred sixty-one".