1145603563 has 4 divisors (see below), whose sum is σ = 1233726928. Its totient is φ = 1057480200.

The previous prime is 1145603519. The next prime is 1145603567. The reversal of 1145603563 is 3653065411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3653065411 = 6269 ⋅582719.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145603563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145603567) 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 3 ways as a sum of consecutive naturals, for example, 44061663 + ... + 44061688.

It is an arithmetic number, because the mean of its divisors is an integer number (308431732).

Almost surely, 2^1145603563 is an apocalyptic number.

1145603563 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1145603563 is a deficient number, since it is larger than the sum of its proper divisors (88123365).

1145603563 is an equidigital number, since it uses as much as digits as its factorization.

1145603563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88123364.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 1145603563 is about 33846.7659164063. The cubic root of 1145603563 is about 1046.3527464165.

Adding to 1145603563 its reverse (3653065411), we get a palindrome (4798668974).

The spelling of 1145603563 in words is "one billion, one hundred forty-five million, six hundred three thousand, five hundred sixty-three".