1116304561 has 4 divisors (see below), whose sum is σ = 1116396400. Its totient is φ = 1116212724.

The previous prime is 1116304547. The next prime is 1116304583. The reversal of 1116304561 is 1654036111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1116304561 - 2¹¹ = 1116302513 is a prime.

It is a super-2 number, since 2×1116304561² = 2492271745818805442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1116304591) 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, 24291 + ... + 53128.

It is an arithmetic number, because the mean of its divisors is an integer number (279099100).

Almost surely, 2^1116304561 is an apocalyptic number.

It is an amenable number.

1116304561 is a deficient number, since it is larger than the sum of its proper divisors (91839).

1116304561 is an equidigital number, since it uses as much as digits as its factorization.

1116304561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91838.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1116304561 is about 33411.1442635537. The cubic root of 1116304561 is about 1037.3553865501.

The spelling of 1116304561 in words is "one billion, one hundred sixteen million, three hundred four thousand, five hundred sixty-one".