1663056441 has 20 divisors (see below), whose sum is σ = 2490108852. Its totient is φ = 1106120448.

The previous prime is 1663056401. The next prime is 1663056503. The reversal of 1663056441 is 1446503661.

It is a happy number.

1663056441 is a `hidden beast` number, since 1 + 6 + 6 + 3 + 0 + 5 + 644 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 195860025 + 1467196416 = 13995^2 + 38304^2 .

It is not a de Polignac number, because 1663056441 - 2²² = 1658862137 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1663056396 and 1663056405.

It is not an unprimeable number, because it can be changed into a prime (1663056401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11365 + ... + 58781.

Almost surely, 2^1663056441 is an apocalyptic number.

It is an amenable number.

1663056441 is a deficient number, since it is larger than the sum of its proper divisors (827052411).

1663056441 is an equidigital number, since it uses as much as digits as its factorization.

1663056441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47862 (or 47853 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1663056441 is about 40780.5890222297. The cubic root of 1663056441 is about 1184.7744034572.

The spelling of 1663056441 in words is "one billion, six hundred sixty-three million, fifty-six thousand, four hundred forty-one".