1022646002489 has 2 divisors, whose sum is σ = 1022646002490. Its totient is φ = 1022646002488.

The previous prime is 1022646002467. The next prime is 1022646002491. The reversal of 1022646002489 is 9842006462201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 613532258089 + 409113744400 = 783283^2 + 639620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022646002489 - 2⁸ = 1022646002233 is a prime.

Together with 1022646002491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1022646002449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511323001244 + 511323001245.

It is an arithmetic number, because the mean of its divisors is an integer number (511323001245).

Almost surely, 2^{1022646002489} is an apocalyptic number.

It is an amenable number.

1022646002489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022646002489 is an equidigital number, since it uses as much as digits as its factorization.

1022646002489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 1022646002489 in words is "one trillion, twenty-two billion, six hundred forty-six million, two thousand, four hundred eighty-nine".