1189131 has 4 divisors (see below), whose sum is σ = 1585512. Its totient is φ = 792752.

The previous prime is 1189127. The next prime is 1189151. The reversal of 1189131 is 1319811.

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

It is a cyclic number.

It is not a de Polignac number, because 1189131 - 2² = 1189127 is a prime.

It is a super-2 number, since 2×1189131² = 2828065070322, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1189121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198186 + ... + 198191.

It is an arithmetic number, because the mean of its divisors is an integer number (396378).

2^1189131 is an apocalyptic number.

1189131 is a deficient number, since it is larger than the sum of its proper divisors (396381).

1189131 is an equidigital number, since it uses as much as digits as its factorization.

1189131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396380.

The product of its digits is 216, while the sum is 24.

The square root of 1189131 is about 1090.4728332242. The cubic root of 1189131 is about 105.9440490291.

The spelling of 1189131 in words is "one million, one hundred eighty-nine thousand, one hundred thirty-one".