1289074323 has 18 divisors (see below), whose sum is σ = 1815652452. Its totient is φ = 813405960.

The previous prime is 1289074313. The next prime is 1289074337. The reversal of 1289074323 is 3234709821.

It is not a de Polignac number, because 1289074323 - 2²⁰ = 1288025747 is a prime.

It is a super-2 number, since 2×1289074323² = 3323425220435816658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1289074313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1181008 + ... + 1182098.

Almost surely, 2^1289074323 is an apocalyptic number.

1289074323 is a deficient number, since it is larger than the sum of its proper divisors (526578129).

1289074323 is an frugal number, since it uses more digits than its factorization.

1289074323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 1289074323 is about 35903.6811900953. The cubic root of 1289074323 is about 1088.3267886750.

The spelling of 1289074323 in words is "one billion, two hundred eighty-nine million, seventy-four thousand, three hundred twenty-three".