1138618 has 8 divisors (see below), whose sum is σ = 1839348. Its totient is φ = 525504.

The previous prime is 1138591. The next prime is 1138637. The reversal of 1138618 is 8168311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1129969 + 8649 = 1063^2 + 93^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21871 + ... + 21922.

2^1138618 is an apocalyptic number.

1138618 is a deficient number, since it is larger than the sum of its proper divisors (700730).

1138618 is a wasteful number, since it uses less digits than its factorization.

1138618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43808.

The product of its digits is 1152, while the sum is 28.

The square root of 1138618 is about 1067.0604481472. The cubic root of 1138618 is about 104.4221622235.

The spelling of 1138618 in words is "one million, one hundred thirty-eight thousand, six hundred eighteen".