1020222389 has 2 divisors, whose sum is σ = 1020222390. Its totient is φ = 1020222388.

The previous prime is 1020222383. The next prime is 1020222419. The reversal of 1020222389 is 9832220201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 753063364 + 267159025 = 27442^2 + 16345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020222389 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 (1020222383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510111194 + 510111195.

It is an arithmetic number, because the mean of its divisors is an integer number (510111195).

Almost surely, 2^1020222389 is an apocalyptic number.

It is an amenable number.

1020222389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020222389 is an equidigital number, since it uses as much as digits as its factorization.

1020222389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1020222389 is about 31940.9202904362. The cubic root of 1020222389 is about 1006.6958617007.

The spelling of 1020222389 in words is "one billion, twenty million, two hundred twenty-two thousand, three hundred eighty-nine".