146891 has 2 divisors, whose sum is σ = 146892. Its totient is φ = 146890.

The previous prime is 146857. The next prime is 146893. The reversal of 146891 is 198641.

It is a strong prime.

It is an emirp because it is prime and its reverse (198641) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146891 is a prime.

Together with 146893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (146893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73445 + 73446.

It is an arithmetic number, because the mean of its divisors is an integer number (73446).

2¹⁴⁶⁸⁹¹ is an apocalyptic number.

146891 is a deficient number, since it is larger than the sum of its proper divisors (1).

146891 is an equidigital number, since it uses as much as digits as its factorization.

146891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 29.

The square root of 146891 is about 383.2636168488. The cubic root of 146891 is about 52.7632731661.

The spelling of 146891 in words is "one hundred forty-six thousand, eight hundred ninety-one".