1016403563 has 4 divisors (see below), whose sum is σ = 1161604080. Its totient is φ = 871203048.

The previous prime is 1016403547. The next prime is 1016403581. The reversal of 1016403563 is 3653046101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3653046101 = 103 ⋅35466467.

It is a cyclic number.

It is not a de Polignac number, because 1016403563 - 2⁴ = 1016403547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1016403503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72600248 + ... + 72600261.

It is an arithmetic number, because the mean of its divisors is an integer number (290401020).

Almost surely, 2^1016403563 is an apocalyptic number.

1016403563 is a deficient number, since it is larger than the sum of its proper divisors (145200517).

1016403563 is an equidigital number, since it uses as much as digits as its factorization.

1016403563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145200516.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1016403563 is about 31881.0847211948. The cubic root of 1016403563 is about 1005.4382264162.

Adding to 1016403563 its reverse (3653046101), we get a palindrome (4669449664).

The spelling of 1016403563 in words is "one billion, sixteen million, four hundred three thousand, five hundred sixty-three".