1992810697 has 2 divisors, whose sum is σ = 1992810698. Its totient is φ = 1992810696.

The previous prime is 1992810679. The next prime is 1992810751. The reversal of 1992810697 is 7960182991.

Together with previous prime (1992810679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1639521081 + 353289616 = 40491^2 + 18796^2 .

It is a cyclic number.

It is not a de Polignac number, because 1992810697 - 2⁷ = 1992810569 is a prime.

It is not a weakly prime, because it can be changed into another prime (1992810637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996405348 + 996405349.

It is an arithmetic number, because the mean of its divisors is an integer number (996405349).

Almost surely, 2^1992810697 is an apocalyptic number.

It is an amenable number.

1992810697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1992810697 is an equidigital number, since it uses as much as digits as its factorization.

1992810697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 52.

The square root of 1992810697 is about 44640.9083352926. The cubic root of 1992810697 is about 1258.4095783438.

It can be divided in two parts, 19928 and 10697, that added together give a square (30625 = 175²).

The spelling of 1992810697 in words is "one billion, nine hundred ninety-two million, eight hundred ten thousand, six hundred ninety-seven".