1383786944 has 56 divisors (see below), whose sum is σ = 2956895280. Its totient is φ = 640126976.

The previous prime is 1383786923. The next prime is 1383786949. The reversal of 1383786944 is 4496873831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383786949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53414 + ... + 74970.

Almost surely, 2^1383786944 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 1383786944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1478447640).

1383786944 is an abundant number, since it is smaller than the sum of its proper divisors (1573108336).

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

1383786944 is a wasteful number, since it uses less digits than its factorization.

1383786944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21645 (or 21635 counting only the distinct ones).

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

The square root of 1383786944 is about 37199.2868748851. The cubic root of 1383786944 is about 1114.3537432184.

The spelling of 1383786944 in words is "one billion, three hundred eighty-three million, seven hundred eighty-six thousand, nine hundred forty-four".