1992107681 has 2 divisors, whose sum is σ = 1992107682. Its totient is φ = 1992107680.

The previous prime is 1992107669. The next prime is 1992107693. The reversal of 1992107681 is 1867012991.

It is a balanced prime because it is at equal distance from previous prime (1992107669) and next prime (1992107693).

It can be written as a sum of positive squares in only one way, i.e., 1869784081 + 122323600 = 43241^2 + 11060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1992107681 is a prime.

It is a super-2 number, since 2×1992107681² = 7936986025398395522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1992107581) 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, 996053840 + 996053841.

It is an arithmetic number, because the mean of its divisors is an integer number (996053841).

Almost surely, 2^1992107681 is an apocalyptic number.

It is an amenable number.

1992107681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1992107681 is an equidigital number, since it uses as much as digits as its factorization.

1992107681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 44.

The square root of 1992107681 is about 44633.0335177881. The cubic root of 1992107681 is about 1258.2615819951.

The spelling of 1992107681 in words is "one billion, nine hundred ninety-two million, one hundred seven thousand, six hundred eighty-one".