1368840217 has 8 divisors (see below), whose sum is σ = 1398481472. Its totient is φ = 1339470000.

The previous prime is 1368840211. The next prime is 1368840257. The reversal of 1368840217 is 7120488631.

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 1368840217 - 2⁷ = 1368840089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1368840217.

It is not an unprimeable number, because it can be changed into a prime (1368840211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57534 + ... + 77767.

It is an arithmetic number, because the mean of its divisors is an integer number (174810184).

Almost surely, 2^1368840217 is an apocalyptic number.

It is an amenable number.

1368840217 is a deficient number, since it is larger than the sum of its proper divisors (29641255).

1368840217 is a wasteful number, since it uses less digits than its factorization.

1368840217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135519.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1368840217 is about 36997.8407072629. The cubic root of 1368840217 is about 1110.3270461788.

The spelling of 1368840217 in words is "one billion, three hundred sixty-eight million, eight hundred forty thousand, two hundred seventeen".