1383869718 has 128 divisors (see below), whose sum is σ = 3852794880. Its totient is φ = 357696000.

The previous prime is 1383869701. The next prime is 1383869723. The reversal of 1383869718 is 8179683831.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1001388 + ... + 1002768.

It is an arithmetic number, because the mean of its divisors is an integer number (30099960).

Almost surely, 2^1383869718 is an apocalyptic number.

1383869718 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1383869718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1926397440).

1383869718 is an abundant number, since it is smaller than the sum of its proper divisors (2468925162).

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

1383869718 is a wasteful number, since it uses less digits than its factorization.

1383869718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651 (or 1645 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 1383869718 is about 37200.3994333394. The cubic root of 1383869718 is about 1114.3759618790.

The spelling of 1383869718 in words is "one billion, three hundred eighty-three million, eight hundred sixty-nine thousand, seven hundred eighteen".