1316823648 has 240 divisors, whose sum is σ = 4192760880. Its totient is φ = 361417728.

The previous prime is 1316823647. The next prime is 1316823661. The reversal of 1316823648 is 8463286131.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316823643) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6684286 + ... + 6684482.

It is an arithmetic number, because the mean of its divisors is an integer number (17469837).

Almost surely, 2^1316823648 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 1316823648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2096380440).

1316823648 is an abundant number, since it is smaller than the sum of its proper divisors (2875937232).

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

1316823648 is an equidigital number, since it uses as much as digits as its factorization.

1316823648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 238 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 1316823648 is about 36288.0648147569. The cubic root of 1316823648 is about 1096.0807211401.

The spelling of 1316823648 in words is "one billion, three hundred sixteen million, eight hundred twenty-three thousand, six hundred forty-eight".