1022271389 has 2 divisors, whose sum is σ = 1022271390. Its totient is φ = 1022271388.

The previous prime is 1022271361. The next prime is 1022271413. The reversal of 1022271389 is 9831722201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1006983289 + 15288100 = 31733^2 + 3910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022271389 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022271589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511135694 + 511135695.

It is an arithmetic number, because the mean of its divisors is an integer number (511135695).

Almost surely, 2^1022271389 is an apocalyptic number.

It is an amenable number.

1022271389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022271389 is an equidigital number, since it uses as much as digits as its factorization.

1022271389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1022271389 is about 31972.9790448122. The cubic root of 1022271389 is about 1007.3693555289.

The spelling of 1022271389 in words is "one billion, twenty-two million, two hundred seventy-one thousand, three hundred eighty-nine".