1992097309 has 2 divisors, whose sum is σ = 1992097310. Its totient is φ = 1992097308.

The previous prime is 1992097307. The next prime is 1992097333. The reversal of 1992097309 is 9037902991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1714208409 + 277888900 = 41403^2 + 16670^2 .

It is a cyclic number.

It is not a de Polignac number, because 1992097309 - 2¹ = 1992097307 is a prime.

Together with 1992097307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1992097301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996048654 + 996048655.

It is an arithmetic number, because the mean of its divisors is an integer number (996048655).

Almost surely, 2^1992097309 is an apocalyptic number.

It is an amenable number.

1992097309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1992097309 is an equidigital number, since it uses as much as digits as its factorization.

1992097309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 275562, while the sum is 49.

The square root of 1992097309 is about 44632.9173256690. The cubic root of 1992097309 is about 1258.2593982591.

The spelling of 1992097309 in words is "one billion, nine hundred ninety-two million, ninety-seven thousand, three hundred nine".