1323136489 has 8 divisors (see below), whose sum is σ = 1327868640. Its totient is φ = 1318413600.

The previous prime is 1323136471. The next prime is 1323136499. The reversal of 1323136489 is 9846313231.

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 1323136489 - 2⁵ = 1323136457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323136439) 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, 395554 + ... + 398884.

It is an arithmetic number, because the mean of its divisors is an integer number (165983580).

Almost surely, 2^1323136489 is an apocalyptic number.

It is an amenable number.

1323136489 is a deficient number, since it is larger than the sum of its proper divisors (4732151).

1323136489 is an equidigital number, since it uses as much as digits as its factorization.

1323136489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4631.

The product of its digits is 93312, while the sum is 40.

The square root of 1323136489 is about 36374.9431477219. The cubic root of 1323136489 is about 1097.8294634077.

The spelling of 1323136489 in words is "one billion, three hundred twenty-three million, one hundred thirty-six thousand, four hundred eighty-nine".