1063912643 has 4 divisors (see below), whose sum is σ = 1064355240. Its totient is φ = 1063470048.

The previous prime is 1063912639. The next prime is 1063912691. The reversal of 1063912643 is 3462193601.

It is a happy number.

1063912643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1063912643 - 2² = 1063912639 is a prime.

It is a super-2 number, since 2×1063912643² = 2263820223870490898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1063912043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217673 + ... + 222506.

It is an arithmetic number, because the mean of its divisors is an integer number (266088810).

Almost surely, 2^1063912643 is an apocalyptic number.

1063912643 is a deficient number, since it is larger than the sum of its proper divisors (442597).

1063912643 is an equidigital number, since it uses as much as digits as its factorization.

1063912643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442596.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 1063912643 is about 32617.6737827822. The cubic root of 1063912643 is about 1020.8658043453.

The spelling of 1063912643 in words is "one billion, sixty-three million, nine hundred twelve thousand, six hundred forty-three".