1124491209 has 4 divisors (see below), whose sum is σ = 1499321616. Its totient is φ = 749660804.

The previous prime is 1124491201. The next prime is 1124491213. The reversal of 1124491209 is 9021944211.

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 1124491209 - 2³ = 1124491201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1124491209.

It is not an unprimeable number, because it can be changed into a prime (1124491201) 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, 187415199 + ... + 187415204.

It is an arithmetic number, because the mean of its divisors is an integer number (374830404).

Almost surely, 2^1124491209 is an apocalyptic number.

It is an amenable number.

1124491209 is a deficient number, since it is larger than the sum of its proper divisors (374830407).

1124491209 is an equidigital number, since it uses as much as digits as its factorization.

1124491209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374830406.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1124491209 is about 33533.4341963361. The cubic root of 1124491209 is about 1039.8850985608.

The spelling of 1124491209 in words is "one billion, one hundred twenty-four million, four hundred ninety-one thousand, two hundred nine".