1152506189 has 4 divisors (see below), whose sum is σ = 1189683840. Its totient is φ = 1115328540.

The previous prime is 1152506183. The next prime is 1152506191. The reversal of 1152506189 is 9816052511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9816052511 = 3929 ⋅2498359.

It is not a de Polignac number, because 1152506189 - 2¹² = 1152502093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152506183) 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, 18588779 + ... + 18588840.

It is an arithmetic number, because the mean of its divisors is an integer number (297420960).

Almost surely, 2^1152506189 is an apocalyptic number.

It is an amenable number.

1152506189 is a deficient number, since it is larger than the sum of its proper divisors (37177651).

1152506189 is an equidigital number, since it uses as much as digits as its factorization.

1152506189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37177650.

The product of its (nonzero) digits is 21600, while the sum is 38.

The square root of 1152506189 is about 33948.5815462149. The cubic root of 1152506189 is about 1048.4500757636.

The spelling of 1152506189 in words is "one billion, one hundred fifty-two million, five hundred six thousand, one hundred eighty-nine".