1340744667 has 8 divisors (see below), whose sum is σ = 1787846160. Its totient is φ = 893736480.

The previous prime is 1340744659. The next prime is 1340744719. The reversal of 1340744667 is 7664470431.

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

It is not a de Polignac number, because 1340744667 - 2³ = 1340744659 is a prime.

It is a super-4 number, since 4×1340744667⁴ (a number of 38 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1340744467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23817 + ... + 56997.

It is an arithmetic number, because the mean of its divisors is an integer number (223480770).

Almost surely, 2^1340744667 is an apocalyptic number.

1340744667 is a deficient number, since it is larger than the sum of its proper divisors (447101493).

1340744667 is a wasteful number, since it uses less digits than its factorization.

1340744667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46653.

The product of its (nonzero) digits is 338688, while the sum is 42.

The square root of 1340744667 is about 36616.1803988346. The cubic root of 1340744667 is about 1102.6779564758.

The spelling of 1340744667 in words is "one billion, three hundred forty million, seven hundred forty-four thousand, six hundred sixty-seven".