1123598609 has 8 divisors (see below), whose sum is σ = 1291992000. Its totient is φ = 957175056.

The previous prime is 1123598543. The next prime is 1123598617. The reversal of 1123598609 is 9068953211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123598609 - 2¹² = 1123594513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123598609.

It is not an unprimeable number, because it can be changed into a prime (1123598009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491234 + ... + 493515.

It is an arithmetic number, because the mean of its divisors is an integer number (161499000).

Almost surely, 2^1123598609 is an apocalyptic number.

It is an amenable number.

1123598609 is a deficient number, since it is larger than the sum of its proper divisors (168393391).

1123598609 is an equidigital number, since it uses as much as digits as its factorization.

1123598609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984919.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1123598609 is about 33520.1224490604. The cubic root of 1123598609 is about 1039.6098786403.

The spelling of 1123598609 in words is "one billion, one hundred twenty-three million, five hundred ninety-eight thousand, six hundred nine".