1138783 has 4 divisors (see below), whose sum is σ = 1147608. Its totient is φ = 1129960.

The previous prime is 1138777. The next prime is 1138793. The reversal of 1138783 is 3878311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3878311 = 199 ⋅19489.

It is a cyclic number.

It is not a de Polignac number, because 1138783 - 2⁵ = 1138751 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138703) 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, 4216 + ... + 4477.

It is an arithmetic number, because the mean of its divisors is an integer number (286902).

2^1138783 is an apocalyptic number.

1138783 is a deficient number, since it is larger than the sum of its proper divisors (8825).

1138783 is an equidigital number, since it uses as much as digits as its factorization.

1138783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8824.

The product of its digits is 4032, while the sum is 31.

The square root of 1138783 is about 1067.1377605539. The cubic root of 1138783 is about 104.4272060060.

The spelling of 1138783 in words is "one million, one hundred thirty-eight thousand, seven hundred eighty-three".