1022260765 has 4 divisors (see below), whose sum is σ = 1226712924. Its totient is φ = 817808608.

The previous prime is 1022260639. The next prime is 1022260823. The reversal of 1022260765 is 5670622201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 152423716 + 869837049 = 12346^2 + 29493^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022260765 - 2⁷ = 1022260637 is a prime.

It is a super-3 number, since 3×1022260765³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 102226072 + ... + 102226081.

It is an arithmetic number, because the mean of its divisors is an integer number (306678231).

Almost surely, 2^1022260765 is an apocalyptic number.

It is an amenable number.

1022260765 is a deficient number, since it is larger than the sum of its proper divisors (204452159).

1022260765 is an equidigital number, since it uses as much as digits as its factorization.

1022260765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204452158.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1022260765 is about 31972.8129040909. The cubic root of 1022260765 is about 1007.3658658068.

Adding to 1022260765 its reverse (5670622201), we get a palindrome (6692882966).

The spelling of 1022260765 in words is "one billion, twenty-two million, two hundred sixty thousand, seven hundred sixty-five".