1043653663 has 8 divisors (see below), whose sum is σ = 1131480000. Its totient is φ = 956905248.

The previous prime is 1043653643. The next prime is 1043653669. The reversal of 1043653663 is 3663563401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1043653663 - 2⁵ = 1043653631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043653669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267463 + ... + 271336.

It is an arithmetic number, because the mean of its divisors is an integer number (141435000).

Almost surely, 2^1043653663 is an apocalyptic number.

1043653663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1043653663 is a deficient number, since it is larger than the sum of its proper divisors (87826337).

1043653663 is a wasteful number, since it uses less digits than its factorization.

1043653663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538961.

The product of its (nonzero) digits is 116640, while the sum is 37.

The square root of 1043653663 is about 32305.6289677202. The cubic root of 1043653663 is about 1014.3444732295.

The spelling of 1043653663 in words is "one billion, forty-three million, six hundred fifty-three thousand, six hundred sixty-three".