2166522366 has 8 divisors (see below), whose sum is σ = 4333044744. Its totient is φ = 722174120.

The previous prime is 2166522341. The next prime is 2166522377. The reversal of 2166522366 is 6632256612.

It is a sphenic number, since it is the product of 3 distinct primes.

2166522366 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 180543525 + ... + 180543536.

It is an arithmetic number, because the mean of its divisors is an integer number (541630593).

Almost surely, 2^2166522366 is an apocalyptic number.

2166522366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2166522366 is a wasteful number, since it uses less digits than its factorization.

2166522366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361087066.

The product of its digits is 155520, while the sum is 39.

The square root of 2166522366 is about 46545.9167489480. The cubic root of 2166522366 is about 1293.9606187754.

Adding to 2166522366 its reverse (6632256612), we get a palindrome (8798778978).

The spelling of 2166522366 in words is "two billion, one hundred sixty-six million, five hundred twenty-two thousand, three hundred sixty-six".