1320166055 has 8 divisors (see below), whose sum is σ = 1706060832. Its totient is φ = 974891808.

The previous prime is 1320166049. The next prime is 1320166063. The reversal of 1320166055 is 5506610231.

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

It is a cyclic number.

It is not a de Polignac number, because 1320166055 - 2⁴ = 1320166039 is a prime.

It is a Duffinian 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, 10155059 + ... + 10155188.

It is an arithmetic number, because the mean of its divisors is an integer number (213257604).

Almost surely, 2^1320166055 is an apocalyptic number.

1320166055 is a deficient number, since it is larger than the sum of its proper divisors (385894777).

1320166055 is a wasteful number, since it uses less digits than its factorization.

1320166055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20310265.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1320166055 is about 36334.0894340288. The cubic root of 1320166055 is about 1097.0073075251.

Adding to 1320166055 its reverse (5506610231), we get a palindrome (6826776286).

The spelling of 1320166055 in words is "one billion, three hundred twenty million, one hundred sixty-six thousand, fifty-five".