1063503243 has 48 divisors (see below), whose sum is σ = 1738490880. Its totient is φ = 642066480.

The previous prime is 1063503239. The next prime is 1063503271. The reversal of 1063503243 is 3423053601.

It is a happy number.

1063503243 is a `hidden beast` number, since 1 + 0 + 635 + 0 + 3 + 24 + 3 = 666.

It is not a de Polignac number, because 1063503243 - 2² = 1063503239 is a prime.

It is a super-2 number, since 2×1063503243² = 2262078295743034098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1063503043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1198546 + ... + 1199432.

It is an arithmetic number, because the mean of its divisors is an integer number (36218560).

Almost surely, 2^1063503243 is an apocalyptic number.

1063503243 is a deficient number, since it is larger than the sum of its proper divisors (674987637).

1063503243 is a wasteful number, since it uses less digits than its factorization.

1063503243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285 (or 1268 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 1063503243 is about 32611.3974401589. The cubic root of 1063503243 is about 1020.7348424399.

Adding to 1063503243 its reverse (3423053601), we get a palindrome (4486556844).

The spelling of 1063503243 in words is "one billion, sixty-three million, five hundred three thousand, two hundred forty-three".