1188438 has 8 divisors (see below), whose sum is σ = 2376888. Its totient is φ = 396144.

The previous prime is 1188413. The next prime is 1188457. The reversal of 1188438 is 8348811.

It is a happy number.

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

1188438 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1188399 and 1188408.

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, 99031 + ... + 99042.

It is an arithmetic number, because the mean of its divisors is an integer number (297111).

2^1188438 is an apocalyptic number.

1188438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1188438 is a wasteful number, since it uses less digits than its factorization.

1188438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198078.

The product of its digits is 6144, while the sum is 33.

The square root of 1188438 is about 1090.1550348460. The cubic root of 1188438 is about 105.9234643912.

The spelling of 1188438 in words is "one million, one hundred eighty-eight thousand, four hundred thirty-eight".