1063971840 has 176 divisors, whose sum is σ = 3438763488. Its totient is φ = 280756224.

The previous prime is 1063971817. The next prime is 1063971841. The reversal of 1063971840 is 481793601.

1063971840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1063971840² = 2264072152625971200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1063971841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1735374 + ... + 1735986.

Almost surely, 2^1063971840 is an apocalyptic number.

1063971840 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 1063971840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1719381744).

1063971840 is an abundant number, since it is smaller than the sum of its proper divisors (2374791648).

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

1063971840 is a wasteful number, since it uses less digits than its factorization.

1063971840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 1063971840 is about 32618.5812076491. The cubic root of 1063971840 is about 1020.8847379399.

The spelling of 1063971840 in words is "one billion, sixty-three million, nine hundred seventy-one thousand, eight hundred forty".