1340331666 has 8 divisors (see below), whose sum is σ = 2680663344. Its totient is φ = 446777220.

The previous prime is 1340331659. The next prime is 1340331667. The reversal of 1340331666 is 6661330431.

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

1340331666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1340331667) 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, 111694300 + ... + 111694311.

It is an arithmetic number, because the mean of its divisors is an integer number (335082918).

Almost surely, 2^1340331666 is an apocalyptic number.

1340331666 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.

1340331666 is a wasteful number, since it uses less digits than its factorization.

1340331666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223388616.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 1340331666 is about 36610.5403674953. The cubic root of 1340331666 is about 1102.5647224204.

The spelling of 1340331666 in words is "one billion, three hundred forty million, three hundred thirty-one thousand, six hundred sixty-six".