1383449340 has 192 divisors, whose sum is σ = 4865817600. Its totient is φ = 291836160.

The previous prime is 1383449339. The next prime is 1383449359. The reversal of 1383449340 is 439443831.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 264955 + ... + 270125.

It is an arithmetic number, because the mean of its divisors is an integer number (25342800).

Almost surely, 2^1383449340 is an apocalyptic number.

1383449340 is a gapful number since it is divisible by the number (10) 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 1383449340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2432908800).

1383449340 is an abundant number, since it is smaller than the sum of its proper divisors (3482368260).

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

1383449340 is a wasteful number, since it uses less digits than its factorization.

1383449340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5217 (or 5201 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 1383449340 is about 37194.7488229185. The cubic root of 1383449340 is about 1114.2631124842.

The spelling of 1383449340 in words is "one billion, three hundred eighty-three million, four hundred forty-nine thousand, three hundred forty".