1022443861 has 2 divisors, whose sum is σ = 1022443862. Its totient is φ = 1022443860.

The previous prime is 1022443859. The next prime is 1022443879. The reversal of 1022443861 is 1683442201.

1022443861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 962860900 + 59582961 = 31030^2 + 7719^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022443861 - 2¹ = 1022443859 is a prime.

Together with 1022443859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022443831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511221930 + 511221931.

It is an arithmetic number, because the mean of its divisors is an integer number (511221931).

Almost surely, 2^1022443861 is an apocalyptic number.

It is an amenable number.

1022443861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022443861 is an equidigital number, since it uses as much as digits as its factorization.

1022443861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 1022443861 is about 31975.6760835483. The cubic root of 1022443861 is about 1007.4260049468.

The spelling of 1022443861 in words is "one billion, twenty-two million, four hundred forty-three thousand, eight hundred sixty-one".