1384443648 has 162 divisors, whose sum is σ = 4643775864. Its totient is φ = 395523072.

The previous prime is 1384443647. The next prime is 1384443649. The reversal of 1384443648 is 8463444831.

1384443648 is a `hidden beast` number, since 138 + 44 + 436 + 48 = 666.

It is an interprime number because it is at equal distance from previous prime (1384443647) and next prime (1384443649).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384443647) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 106765 + ... + 119027.

Almost surely, 2^1384443648 is an apocalyptic number.

1384443648 is a gapful number since it is divisible by the number (18) 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 1384443648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2321887932).

1384443648 is an abundant number, since it is smaller than the sum of its proper divisors (3259332216).

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

1384443648 is a wasteful number, since it uses less digits than its factorization.

1384443648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12299 (or 12275 counting only the distinct ones).

The product of its digits is 884736, while the sum is 45.

The square root of 1384443648 is about 37208.1126637727. The cubic root of 1384443648 is about 1114.5299950204.

The spelling of 1384443648 in words is "one billion, three hundred eighty-four million, four hundred forty-three thousand, six hundred forty-eight".