1138198 has 8 divisors (see below), whose sum is σ = 1725192. Its totient is φ = 563136.

The previous prime is 1138183. The next prime is 1138213. The reversal of 1138198 is 8918311.

It is an interprime number because it is at equal distance from previous prime (1138183) and next prime (1138213).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2740 + ... + 3127.

It is an arithmetic number, because the mean of its divisors is an integer number (215649).

2^1138198 is an apocalyptic number.

1138198 is a deficient number, since it is larger than the sum of its proper divisors (586994).

1138198 is an equidigital number, since it uses as much as digits as its factorization.

1138198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5966.

The product of its digits is 1728, while the sum is 31.

The square root of 1138198 is about 1066.8636276488. The cubic root of 1138198 is about 104.4093213053.

The spelling of 1138198 in words is "one million, one hundred thirty-eight thousand, one hundred ninety-eight".