813860273 has 2 divisors, whose sum is σ = 813860274. Its totient is φ = 813860272.

The previous prime is 813860213. The next prime is 813860303. The reversal of 813860273 is 372068318.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407716864 + 406143409 = 20192^2 + 20153^2 .

It is a cyclic number.

It is not a de Polignac number, because 813860273 - 2⁸ = 813860017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (813860213) 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, 406930136 + 406930137.

It is an arithmetic number, because the mean of its divisors is an integer number (406930137).

Almost surely, 2^813860273 is an apocalyptic number.

It is an amenable number.

813860273 is a deficient number, since it is larger than the sum of its proper divisors (1).

813860273 is an equidigital number, since it uses as much as digits as its factorization.

813860273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 813860273 is about 28528.2364158740. The cubic root of 813860273 is about 933.6482408327.

The spelling of 813860273 in words is "eight hundred thirteen million, eight hundred sixty thousand, two hundred seventy-three".