1198838 has 4 divisors (see below), whose sum is σ = 1798260. Its totient is φ = 599418.

The previous prime is 1198819. The next prime is 1198849. The reversal of 1198838 is 8388911.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 299708 + ... + 299711.

It is an arithmetic number, because the mean of its divisors is an integer number (449565).

2^1198838 is an apocalyptic number.

1198838 is a deficient number, since it is larger than the sum of its proper divisors (599422).

1198838 is an equidigital number, since it uses as much as digits as its factorization.

1198838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599421.

The product of its digits is 13824, while the sum is 38.

The square root of 1198838 is about 1094.9146085426. The cubic root of 1198838 is about 106.2315455838.

The spelling of 1198838 in words is "one million, one hundred ninety-eight thousand, eight hundred thirty-eight".