82193174309 has 2 divisors, whose sum is σ = 82193174310. Its totient is φ = 82193174308.

The previous prime is 82193174299. The next prime is 82193174369. The reversal of 82193174309 is 90347139128.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64159370209 + 18033804100 = 253297^2 + 134290^2 .

It is a cyclic number.

It is not a de Polignac number, because 82193174309 - 2¹⁶ = 82193108773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82193174369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41096587154 + 41096587155.

It is an arithmetic number, because the mean of its divisors is an integer number (41096587155).

Almost surely, 2^82193174309 is an apocalyptic number.

It is an amenable number.

82193174309 is a deficient number, since it is larger than the sum of its proper divisors (1).

82193174309 is an equidigital number, since it uses as much as digits as its factorization.

82193174309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 82193174309 in words is "eighty-two billion, one hundred ninety-three million, one hundred seventy-four thousand, three hundred nine".