1138863 has 8 divisors (see below), whose sum is σ = 1656576. Its totient is φ = 690200.

The previous prime is 1138853. The next prime is 1138867. The reversal of 1138863 is 3688311.

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 1138863 - 2⁵ = 1138831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1138863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138867) 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, 17223 + ... + 17288.

It is an arithmetic number, because the mean of its divisors is an integer number (207072).

2^1138863 is an apocalyptic number.

1138863 is a deficient number, since it is larger than the sum of its proper divisors (517713).

1138863 is a wasteful number, since it uses less digits than its factorization.

1138863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34525.

The product of its digits is 3456, while the sum is 30.

The square root of 1138863 is about 1067.1752433410. The cubic root of 1138863 is about 104.4296513009.

The spelling of 1138863 in words is "one million, one hundred thirty-eight thousand, eight hundred sixty-three".