1383879644 has 12 divisors (see below), whose sum is σ = 2767759344. Its totient is φ = 593091264.

The previous prime is 1383879619. The next prime is 1383879647. The reversal of 1383879644 is 4469783831.

1383879644 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383879647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24712109 + ... + 24712164.

It is an arithmetic number, because the mean of its divisors is an integer number (230646612).

Almost surely, 2^1383879644 is an apocalyptic number.

1383879644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1383879644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1383879644 is a wasteful number, since it uses less digits than its factorization.

1383879644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49424284 (or 49424282 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 53.

The square root of 1383879644 is about 37200.5328456462. The cubic root of 1383879644 is about 1114.3786262120.

The spelling of 1383879644 in words is "one billion, three hundred eighty-three million, eight hundred seventy-nine thousand, six hundred forty-four".