1323555984 has 80 divisors (see below), whose sum is σ = 3820311040. Its totient is φ = 438721920.

The previous prime is 1323555983. The next prime is 1323556009. The reversal of 1323555984 is 4895553231.

1323555984 is a `hidden beast` number, since 1 + 3 + 2 + 3 + 55 + 598 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (1323555983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69729 + ... + 86655.

It is an arithmetic number, because the mean of its divisors is an integer number (47753888).

Almost surely, 2^1323555984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323555984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1910155520).

1323555984 is an abundant number, since it is smaller than the sum of its proper divisors (2496755056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1323555984 is a wasteful number, since it uses less digits than its factorization.

1323555984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17125 (or 17113 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 1323555984 is about 36380.7089540597. The cubic root of 1323555984 is about 1097.9454719256.

The spelling of 1323555984 in words is "one billion, three hundred twenty-three million, five hundred fifty-five thousand, nine hundred eighty-four".