1022730861389 has 2 divisors, whose sum is σ = 1022730861390. Its totient is φ = 1022730861388.

The previous prime is 1022730861323. The next prime is 1022730861403. The reversal of 1022730861389 is 9831680372201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 879718312489 + 143012548900 = 937933^2 + 378170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022730861389 - 2³² = 1018435894093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022730861289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511365430694 + 511365430695.

It is an arithmetic number, because the mean of its divisors is an integer number (511365430695).

Almost surely, 2^{1022730861389} is an apocalyptic number.

It is an amenable number.

1022730861389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022730861389 is an equidigital number, since it uses as much as digits as its factorization.

1022730861389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 1022730861389 in words is "one trillion, twenty-two billion, seven hundred thirty million, eight hundred sixty-one thousand, three hundred eighty-nine".