1022799081 has 4 divisors (see below), whose sum is σ = 1363732112. Its totient is φ = 681866052.

The previous prime is 1022799077. The next prime is 1022799097. The reversal of 1022799081 is 1809972201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1022799081 - 2² = 1022799077 is a prime.

It is a super-2 number, since 2×1022799081² = 2092235920188889122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022799031) 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, 170466511 + ... + 170466516.

It is an arithmetic number, because the mean of its divisors is an integer number (340933028).

Almost surely, 2^1022799081 is an apocalyptic number.

It is an amenable number.

1022799081 is a deficient number, since it is larger than the sum of its proper divisors (340933031).

1022799081 is an equidigital number, since it uses as much as digits as its factorization.

1022799081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340933030.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 1022799081 is about 31981.2301358156. The cubic root of 1022799081 is about 1007.5426589248.

The spelling of 1022799081 in words is "one billion, twenty-two million, seven hundred ninety-nine thousand, eighty-one".