1188398 has 8 divisors (see below), whose sum is σ = 1807920. Its totient is φ = 585760.

The previous prime is 1188389. The next prime is 1188409. The reversal of 1188398 is 8938811.

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

It is a plaindrome in base 16.

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, 4043 + ... + 4326.

It is an arithmetic number, because the mean of its divisors is an integer number (225990).

2^1188398 is an apocalyptic number.

1188398 is a deficient number, since it is larger than the sum of its proper divisors (619522).

1188398 is an equidigital number, since it uses as much as digits as its factorization.

1188398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8442.

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

The square root of 1188398 is about 1090.1366886772. The cubic root of 1188398 is about 105.9222760005.

The spelling of 1188398 in words is "one million, one hundred eighty-eight thousand, three hundred ninety-eight".