1384621056 has 396 divisors, whose sum is σ = 4986688512. Its totient is φ = 362299392.

The previous prime is 1384621033. The next prime is 1384621079. The reversal of 1384621056 is 6501264831.

It is a happy number.

1384621056 is a `hidden beast` number, since 138 + 462 + 10 + 56 = 666.

It is an interprime number because it is at equal distance from previous prime (1384621033) and next prime (1384621079).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1384621056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10902465 + ... + 10902591.

Almost surely, 2^1384621056 is an apocalyptic number.

1384621056 is a gapful number since it is divisible by the number (16) 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 1384621056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2493344256).

1384621056 is an abundant number, since it is smaller than the sum of its proper divisors (3602067456).

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

1384621056 is a wasteful number, since it uses less digits than its factorization.

1384621056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1384621056 is about 37210.4965836254. The cubic root of 1384621056 is about 1114.5775997249.

Adding to 1384621056 its reverse (6501264831), we get a palindrome (7885885887).

The spelling of 1384621056 in words is "one billion, three hundred eighty-four million, six hundred twenty-one thousand, fifty-six".