1152986509 has 4 divisors (see below), whose sum is σ = 1153856704. Its totient is φ = 1152116316.

The previous prime is 1152986479. The next prime is 1152986561. The reversal of 1152986509 is 9056892511.

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.

It is a cyclic number.

It is not a de Polignac number, because 1152986509 - 2⁷ = 1152986381 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 (1152986579) 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, 433107 + ... + 435760.

It is an arithmetic number, because the mean of its divisors is an integer number (288464176).

Almost surely, 2^1152986509 is an apocalyptic number.

It is an amenable number.

1152986509 is a deficient number, since it is larger than the sum of its proper divisors (870195).

1152986509 is an equidigital number, since it uses as much as digits as its factorization.

1152986509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870194.

The product of its (nonzero) digits is 194400, while the sum is 46.

The square root of 1152986509 is about 33955.6550371216. The cubic root of 1152986509 is about 1048.5957066800.

The spelling of 1152986509 in words is "one billion, one hundred fifty-two million, nine hundred eighty-six thousand, five hundred nine".