1138918 has 8 divisors (see below), whose sum is σ = 1863720. Its totient is φ = 517680.

The previous prime is 1138901. The next prime is 1138919. The reversal of 1138918 is 8198311.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1138918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138919) 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, 25863 + ... + 25906.

It is an arithmetic number, because the mean of its divisors is an integer number (232965).

2^1138918 is an apocalyptic number.

1138918 is a deficient number, since it is larger than the sum of its proper divisors (724802).

1138918 is a wasteful number, since it uses less digits than its factorization.

1138918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51782.

The product of its digits is 1728, while the sum is 31.

The square root of 1138918 is about 1067.2010119935. The cubic root of 1138918 is about 104.4313323747.

The spelling of 1138918 in words is "one million, one hundred thirty-eight thousand, nine hundred eighteen".