1115945573 has 2 divisors, whose sum is σ = 1115945574. Its totient is φ = 1115945572.

The previous prime is 1115945539. The next prime is 1115945599. The reversal of 1115945573 is 3755495111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1026113089 + 89832484 = 32033^2 + 9478^2 .

It is an emirp because it is prime and its reverse (3755495111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1115945573 - 2¹⁴ = 1115929189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1115945573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115945513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557972786 + 557972787.

It is an arithmetic number, because the mean of its divisors is an integer number (557972787).

Almost surely, 2^1115945573 is an apocalyptic number.

It is an amenable number.

1115945573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115945573 is an equidigital number, since it uses as much as digits as its factorization.

1115945573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94500, while the sum is 41.

The square root of 1115945573 is about 33405.7715522333. The cubic root of 1115945573 is about 1037.2441749462.

The spelling of 1115945573 in words is "one billion, one hundred fifteen million, nine hundred forty-five thousand, five hundred seventy-three".