1091264022 has 32 divisors (see below), whose sum is σ = 2427384960. Its totient is φ = 363401640.

The previous prime is 1091264021. The next prime is 1091264039. The reversal of 1091264022 is 2204621901.

1091264022 is a `hidden beast` number, since 1 + 0 + 9 + 12 + 640 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091264021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49653 + ... + 68175.

It is an arithmetic number, because the mean of its divisors is an integer number (75855780).

Almost surely, 2^1091264022 is an apocalyptic number.

1091264022 is an abundant number, since it is smaller than the sum of its proper divisors (1336120938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1091264022 is a wasteful number, since it uses less digits than its factorization.

1091264022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19625 (or 19619 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1091264022 is about 33034.2855530432. The cubic root of 1091264022 is about 1029.5401290162.

Adding to 1091264022 its reverse (2204621901), we get a palindrome (3295885923).

The spelling of 1091264022 in words is "one billion, ninety-one million, two hundred sixty-four thousand, twenty-two".