1063661443 has 16 divisors (see below), whose sum is σ = 1158829056. Its totient is φ = 970463520.

The previous prime is 1063661419. The next prime is 1063661447. The reversal of 1063661443 is 3441663601.

It is not a de Polignac number, because 1063661443 - 2⁵ = 1063661411 is a prime.

It is a super-2 number, since 2×1063661443² = 2262751330649684498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1063661399 and 1063661408.

It is not an unprimeable number, because it can be changed into a prime (1063661447) 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, 480846 + ... + 483052.

It is an arithmetic number, because the mean of its divisors is an integer number (72426816).

Almost surely, 2^1063661443 is an apocalyptic number.

1063661443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1063661443 is a deficient number, since it is larger than the sum of its proper divisors (95167613).

1063661443 is a wasteful number, since it uses less digits than its factorization.

1063661443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2634.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 1063661443 is about 32613.8228823301. The cubic root of 1063661443 is about 1020.7854526118.

The spelling of 1063661443 in words is "one billion, sixty-three million, six hundred sixty-one thousand, four hundred forty-three".