1384390656 has 224 divisors, whose sum is σ = 4482388800. Its totient is φ = 418775040.

The previous prime is 1384390643. The next prime is 1384390681. The reversal of 1384390656 is 6560934831.

It is a super-2 number, since 2×1384390656² = 3833074976840220672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2432740 + ... + 2433308.

Almost surely, 2^1384390656 is an apocalyptic number.

1384390656 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 1384390656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2241194400).

1384390656 is an abundant number, since it is smaller than the sum of its proper divisors (3097998144).

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

1384390656 is an equidigital number, since it uses as much as digits as its factorization.

1384390656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615 (or 585 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 1384390656 is about 37207.4005541908. The cubic root of 1384390656 is about 1114.5157746445.

The spelling of 1384390656 in words is "one billion, three hundred eighty-four million, three hundred ninety thousand, six hundred fifty-six".