1340131766 has 4 divisors (see below), whose sum is σ = 2010197652. Its totient is φ = 670065882.

The previous prime is 1340131759. The next prime is 1340131801. The reversal of 1340131766 is 6671310431.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335032940 + ... + 335032943.

It is an arithmetic number, because the mean of its divisors is an integer number (502549413).

Almost surely, 2^1340131766 is an apocalyptic number.

1340131766 is a deficient number, since it is larger than the sum of its proper divisors (670065886).

1340131766 is an equidigital number, since it uses as much as digits as its factorization.

1340131766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670065885.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 1340131766 is about 36607.8101776110. The cubic root of 1340131766 is about 1102.5099067228.

The spelling of 1340131766 in words is "one billion, three hundred forty million, one hundred thirty-one thousand, seven hundred sixty-six".