1992716647 has 2 divisors, whose sum is σ = 1992716648. Its totient is φ = 1992716646.

The previous prime is 1992716633. The next prime is 1992716657. The reversal of 1992716647 is 7466172991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1992716647 - 2⁷ = 1992716519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1992716594 and 1992716603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1992716657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996358323 + 996358324.

It is an arithmetic number, because the mean of its divisors is an integer number (996358324).

Almost surely, 2^1992716647 is an apocalyptic number.

1992716647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1992716647 is an equidigital number, since it uses as much as digits as its factorization.

1992716647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 52.

The square root of 1992716647 is about 44639.8549168789. The cubic root of 1992716647 is about 1258.3897812998.

The spelling of 1992716647 in words is "one billion, nine hundred ninety-two million, seven hundred sixteen thousand, six hundred forty-seven".