1022351009 has 4 divisors (see below), whose sum is σ = 1022445204. Its totient is φ = 1022256816.

The previous prime is 1022350919. The next prime is 1022351053. The reversal of 1022351009 is 9001532201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9001532201 = 113 ⋅79659577.

It can be written as a sum of positive squares in 2 ways, for example, as 694849600 + 327501409 = 26360^2 + 18097^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022351009 - 2⁸ = 1022350753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1022351059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28322 + ... + 53355.

It is an arithmetic number, because the mean of its divisors is an integer number (255611301).

Almost surely, 2^1022351009 is an apocalyptic number.

It is an amenable number.

1022351009 is a deficient number, since it is larger than the sum of its proper divisors (94195).

1022351009 is an equidigital number, since it uses as much as digits as its factorization.

1022351009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94194.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1022351009 is about 31974.2241344493. The cubic root of 1022351009 is about 1007.3955079664.

The spelling of 1022351009 in words is "one billion, twenty-two million, three hundred fifty-one thousand, nine".