9022491661 has 2 divisors, whose sum is σ = 9022491662. Its totient is φ = 9022491660.

The previous prime is 9022491631. The next prime is 9022491703. The reversal of 9022491661 is 1661942209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8654580900 + 367910761 = 93030^2 + 19181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9022491661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9022491631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4511245830 + 4511245831.

It is an arithmetic number, because the mean of its divisors is an integer number (4511245831).

Almost surely, 2^9022491661 is an apocalyptic number.

It is an amenable number.

9022491661 is a deficient number, since it is larger than the sum of its proper divisors (1).

9022491661 is an equidigital number, since it uses as much as digits as its factorization.

9022491661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 9022491661 is about 94986.7972983614. The cubic root of 9022491661 is about 2081.8151423686.

The spelling of 9022491661 in words is "nine billion, twenty-two million, four hundred ninety-one thousand, six hundred sixty-one".