1383531768 has 96 divisors (see below), whose sum is σ = 3912480000. Its totient is φ = 441116928.

The previous prime is 1383531761. The next prime is 1383531781. The reversal of 1383531768 is 8671353831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383531761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 224553 + ... + 230631.

It is an arithmetic number, because the mean of its divisors is an integer number (40755000).

Almost surely, 2^1383531768 is an apocalyptic number.

1383531768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1383531768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1956240000).

1383531768 is an abundant number, since it is smaller than the sum of its proper divisors (2528948232).

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

1383531768 is a wasteful number, since it uses less digits than its factorization.

1383531768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6229 (or 6222 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 1383531768 is about 37195.8568660543. The cubic root of 1383531768 is about 1114.2852418707.

The spelling of 1383531768 in words is "one billion, three hundred eighty-three million, five hundred thirty-one thousand, seven hundred sixty-eight".