1166205522 has 32 divisors (see below), whose sum is σ = 2456766720. Its totient is φ = 368035920.

The previous prime is 1166205499. The next prime is 1166205529. The reversal of 1166205522 is 2255026611.

It is a self number, because there is not a number n which added to its sum of digits gives 1166205522.

It is not an unprimeable number, because it can be changed into a prime (1166205529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272733 + ... + 276975.

It is an arithmetic number, because the mean of its divisors is an integer number (76773960).

Almost surely, 2^1166205522 is an apocalyptic number.

1166205522 is an abundant number, since it is smaller than the sum of its proper divisors (1290561198).

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

1166205522 is a wasteful number, since it uses less digits than its factorization.

1166205522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6678.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1166205522 is about 34149.7514193003. The cubic root of 1166205522 is about 1052.5878786857.

The spelling of 1166205522 in words is "one billion, one hundred sixty-six million, two hundred five thousand, five hundred twenty-two".