320194453 has 2 divisors, whose sum is σ = 320194454. Its totient is φ = 320194452.

The previous prime is 320194421. The next prime is 320194471. The reversal of 320194453 is 354491023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317445489 + 2748964 = 17817^2 + 1658^2 .

It is an emirp because it is prime and its reverse (354491023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320194453 - 2⁵ = 320194421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320194493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160097226 + 160097227.

It is an arithmetic number, because the mean of its divisors is an integer number (160097227).

Almost surely, 2^320194453 is an apocalyptic number.

It is an amenable number.

320194453 is a deficient number, since it is larger than the sum of its proper divisors (1).

320194453 is an equidigital number, since it uses as much as digits as its factorization.

320194453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 320194453 is about 17893.9781211446. The cubic root of 320194453 is about 684.1288964306.

The spelling of 320194453 in words is "three hundred twenty million, one hundred ninety-four thousand, four hundred fifty-three".