1388168 has 16 divisors (see below), whose sum is σ = 2639580. Its totient is φ = 684288.

The previous prime is 1388161. The next prime is 1388171. The reversal of 1388168 is 8618831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1387684 + 484 = 1178^2 + 22^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388161) 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, 605 + ... + 1772.

2^1388168 is an apocalyptic number.

It is an amenable number.

1388168 is a deficient number, since it is larger than the sum of its proper divisors (1251412).

1388168 is a wasteful number, since it uses less digits than its factorization.

1388168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456 (or 2452 counting only the distinct ones).

The product of its digits is 9216, while the sum is 35.

The square root of 1388168 is about 1178.2054150274. The cubic root of 1388168 is about 111.5528515353.

The spelling of 1388168 in words is "one million, three hundred eighty-eight thousand, one hundred sixty-eight".