1123264009 has 4 divisors (see below), whose sum is σ = 1283730304. Its totient is φ = 962797716.

The previous prime is 1123263997. The next prime is 1123264027. The reversal of 1123264009 is 9004623211.

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: 9004623211 = 23 ⋅391505357.

It is a cyclic number.

It is not a de Polignac number, because 1123264009 - 2⁷ = 1123263881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123262009) 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, 80233137 + ... + 80233150.

It is an arithmetic number, because the mean of its divisors is an integer number (320932576).

Almost surely, 2^1123264009 is an apocalyptic number.

It is an amenable number.

1123264009 is a deficient number, since it is larger than the sum of its proper divisors (160466295).

1123264009 is an equidigital number, since it uses as much as digits as its factorization.

1123264009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160466294.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1123264009 is about 33515.1310455442. The cubic root of 1123264009 is about 1039.5066721518.

The spelling of 1123264009 in words is "one billion, one hundred twenty-three million, two hundred sixty-four thousand, nine".