1152189 has 6 divisors (see below), whose sum is σ = 1664286. Its totient is φ = 768120.

The previous prime is 1152187. The next prime is 1152227. The reversal of 1152189 is 9812511.

It can be written as a sum of positive squares in only one way, i.e., 736164 + 416025 = 858^2 + 645^2 .

It is not a de Polignac number, because 1152189 - 2¹ = 1152187 is a prime.

It is a super-4 number, since 4×1152189⁴ (a number of 25 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64002 + ... + 64019.

It is an arithmetic number, because the mean of its divisors is an integer number (277381).

2^1152189 is an apocalyptic number.

It is an amenable number.

1152189 is a deficient number, since it is larger than the sum of its proper divisors (512097).

1152189 is a wasteful number, since it uses less digits than its factorization.

1152189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128027 (or 128024 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The square root of 1152189 is about 1073.4006707656. The cubic root of 1152189 is about 104.8353883267.

It can be divided in two parts, 115 and 2189, that added together give a square (2304 = 48²).

The spelling of 1152189 in words is "one million, one hundred fifty-two thousand, one hundred eighty-nine".