1189138 has 4 divisors (see below), whose sum is σ = 1783710. Its totient is φ = 594568.

The previous prime is 1189127. The next prime is 1189151. The reversal of 1189138 is 8319811.

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

It can be written as a sum of positive squares in only one way, i.e., 1181569 + 7569 = 1087^2 + 87^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 297283 + ... + 297286.

2^1189138 is an apocalyptic number.

1189138 is a deficient number, since it is larger than the sum of its proper divisors (594572).

1189138 is an equidigital number, since it uses as much as digits as its factorization.

1189138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594571.

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

The square root of 1189138 is about 1090.4760428363. The cubic root of 1189138 is about 105.9442569139.

The spelling of 1189138 in words is "one million, one hundred eighty-nine thousand, one hundred thirty-eight".