1321063166 has 16 divisors (see below), whose sum is σ = 2111040144. Its totient is φ = 617860224.

The previous prime is 1321063147. The next prime is 1321063199. The reversal of 1321063166 is 6613601231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113645 + ... + 124728.

It is an arithmetic number, because the mean of its divisors is an integer number (131940009).

Almost surely, 2^1321063166 is an apocalyptic number.

1321063166 is a deficient number, since it is larger than the sum of its proper divisors (789976978).

1321063166 is a wasteful number, since it uses less digits than its factorization.

1321063166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238555.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 1321063166 is about 36346.4326447590. The cubic root of 1321063166 is about 1097.2557395263.

Adding to 1321063166 its reverse (6613601231), we get a palindrome (7934664397).

The spelling of 1321063166 in words is "one billion, three hundred twenty-one million, sixty-three thousand, one hundred sixty-six".