819523273 has 2 divisors, whose sum is σ = 819523274. Its totient is φ = 819523272.

The previous prime is 819523207. The next prime is 819523277. The reversal of 819523273 is 372325918.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 712462864 + 107060409 = 26692^2 + 10347^2 .

It is a cyclic number.

It is not a de Polignac number, because 819523273 - 2¹⁷ = 819392201 is a prime.

It is not a weakly prime, because it can be changed into another prime (819523277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409761636 + 409761637.

It is an arithmetic number, because the mean of its divisors is an integer number (409761637).

Almost surely, 2^819523273 is an apocalyptic number.

It is an amenable number.

819523273 is a deficient number, since it is larger than the sum of its proper divisors (1).

819523273 is an equidigital number, since it uses as much as digits as its factorization.

819523273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 819523273 is about 28627.3169018684. The cubic root of 819523273 is about 935.8087402482.

The spelling of 819523273 in words is "eight hundred nineteen million, five hundred twenty-three thousand, two hundred seventy-three".