1290166841 has 2 divisors, whose sum is σ = 1290166842. Its totient is φ = 1290166840.

The previous prime is 1290166831. The next prime is 1290166849. The reversal of 1290166841 is 1486610921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 967210000 + 322956841 = 31100^2 + 17971^2 .

It is a cyclic number.

It is not a de Polignac number, because 1290166841 - 2⁶ = 1290166777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1290166795 and 1290166804.

It is not a weakly prime, because it can be changed into another prime (1290166849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645083420 + 645083421.

It is an arithmetic number, because the mean of its divisors is an integer number (645083421).

Almost surely, 2^1290166841 is an apocalyptic number.

It is an amenable number.

1290166841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290166841 is an equidigital number, since it uses as much as digits as its factorization.

1290166841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1290166841 is about 35918.8925358230. The cubic root of 1290166841 is about 1088.6341619163.

The spelling of 1290166841 in words is "one billion, two hundred ninety million, one hundred sixty-six thousand, eight hundred forty-one".