1383493728 has 48 divisors (see below), whose sum is σ = 3845303280. Its totient is φ = 434036736.

The previous prime is 1383493703. The next prime is 1383493729. The reversal of 1383493728 is 8273943831.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383493729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422233 + ... + 425496.

It is an arithmetic number, because the mean of its divisors is an integer number (80110485).

Almost surely, 2^1383493728 is an apocalyptic number.

It is an amenable number.

1383493728 is an abundant number, since it is smaller than the sum of its proper divisors (2461809552).

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

1383493728 is a wasteful number, since it uses less digits than its factorization.

1383493728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847759 (or 847751 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 1383493728 is about 37195.3455152658. The cubic root of 1383493728 is about 1114.2750294082.

The spelling of 1383493728 in words is "one billion, three hundred eighty-three million, four hundred ninety-three thousand, seven hundred twenty-eight".