1129838 has 4 divisors (see below), whose sum is σ = 1694760. Its totient is φ = 564918.

The previous prime is 1129831. The next prime is 1129841. The reversal of 1129838 is 8389211.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282458 + ... + 282461.

It is an arithmetic number, because the mean of its divisors is an integer number (423690).

2^1129838 is an apocalyptic number.

1129838 is a deficient number, since it is larger than the sum of its proper divisors (564922).

1129838 is an equidigital number, since it uses as much as digits as its factorization.

1129838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564921.

The product of its digits is 3456, while the sum is 32.

The square root of 1129838 is about 1062.9383801519. The cubic root of 1129838 is about 104.1530660287.

The spelling of 1129838 in words is "one million, one hundred twenty-nine thousand, eight hundred thirty-eight".