190913 has 2 divisors, whose sum is σ = 190914. Its totient is φ = 190912.

The previous prime is 190909. The next prime is 190921. The reversal of 190913 is 319091.

190913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153664 + 37249 = 392^2 + 193^2 .

It is a cyclic number.

It is not a de Polignac number, because 190913 - 2² = 190909 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 (190313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95456 + 95457.

It is an arithmetic number, because the mean of its divisors is an integer number (95457).

2¹⁹⁰⁹¹³ is an apocalyptic number.

It is an amenable number.

190913 is a deficient number, since it is larger than the sum of its proper divisors (1).

190913 is an equidigital number, since it uses as much as digits as its factorization.

190913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 190913 is about 436.9359220755. The cubic root of 190913 is about 57.5809068984.

The spelling of 190913 in words is "one hundred ninety thousand, nine hundred thirteen".