9065561993 has 4 divisors (see below), whose sum is σ = 9310577220. Its totient is φ = 8820546768.

The previous prime is 9065561977. The next prime is 9065562047. The reversal of 9065561993 is 3991655609.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7469799184 + 1595762809 = 86428^2 + 39947^2 .

It is a cyclic number.

It is not a de Polignac number, because 9065561993 - 2⁴ = 9065561977 is a prime.

It is a super-2 number, since 2×9065561993² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9065560993) 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, 122507558 + ... + 122507631.

It is an arithmetic number, because the mean of its divisors is an integer number (2327644305).

Almost surely, 2^9065561993 is an apocalyptic number.

It is an amenable number.

9065561993 is a deficient number, since it is larger than the sum of its proper divisors (245015227).

9065561993 is a wasteful number, since it uses less digits than its factorization.

9065561993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245015226.

The product of its (nonzero) digits is 1968300, while the sum is 53.

The square root of 9065561993 is about 95213.2448402007. The cubic root of 9065561993 is about 2085.1225129528.

The spelling of 9065561993 in words is "nine billion, sixty-five million, five hundred sixty-one thousand, nine hundred ninety-three".