1138611 has 8 divisors (see below), whose sum is σ = 1555344. Its totient is φ = 740480.

The previous prime is 1138591. The next prime is 1138637. The reversal of 1138611 is 1168311.

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 1138611 - 2⁶ = 1138547 is a prime.

1138611 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1138681) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4506 + ... + 4751.

It is an arithmetic number, because the mean of its divisors is an integer number (194418).

2^1138611 is an apocalyptic number.

1138611 is a deficient number, since it is larger than the sum of its proper divisors (416733).

1138611 is an equidigital number, since it uses as much as digits as its factorization.

1138611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9301.

The product of its digits is 144, while the sum is 21.

The square root of 1138611 is about 1067.0571681030. The cubic root of 1138611 is about 104.4219482341.

The spelling of 1138611 in words is "one million, one hundred thirty-eight thousand, six hundred eleven".