1320918166 has 8 divisors (see below), whose sum is σ = 1982310840. Its totient is φ = 660147888.

The previous prime is 1320918163. The next prime is 1320918229. The reversal of 1320918166 is 6618190231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320918163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150256 + ... + 158803.

It is an arithmetic number, because the mean of its divisors is an integer number (247788855).

Almost surely, 2^1320918166 is an apocalyptic number.

1320918166 is a deficient number, since it is larger than the sum of its proper divisors (661392674).

1320918166 is a wasteful number, since it uses less digits than its factorization.

1320918166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311198.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1320918166 is about 36344.4378963274. The cubic root of 1320918166 is about 1097.2155930979.

It can be divided in two parts, 13209 and 18166, that added together give a triangular number (31375 = T₂₅₀).

The spelling of 1320918166 in words is "one billion, three hundred twenty million, nine hundred eighteen thousand, one hundred sixty-six".