1115565673 has 2 divisors, whose sum is σ = 1115565674. Its totient is φ = 1115565672.

The previous prime is 1115565667. The next prime is 1115565793. The reversal of 1115565673 is 3765655111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1080897129 + 34668544 = 32877^2 + 5888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115565673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115565173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557782836 + 557782837.

It is an arithmetic number, because the mean of its divisors is an integer number (557782837).

Almost surely, 2^1115565673 is an apocalyptic number.

It is an amenable number.

1115565673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115565673 is an equidigital number, since it uses as much as digits as its factorization.

1115565673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94500, while the sum is 40.

The square root of 1115565673 is about 33400.0849250417. The cubic root of 1115565673 is about 1037.1264589945.

The spelling of 1115565673 in words is "one billion, one hundred fifteen million, five hundred sixty-five thousand, six hundred seventy-three".