9081818093 has 4 divisors (see below), whose sum is σ = 9095558268. Its totient is φ = 9068077920.

The previous prime is 9081818087. The next prime is 9081818129. The reversal of 9081818093 is 3908181809.

It is a happy number.

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 6021294409 + 3060523684 = 77597^2 + 55322^2 .

It is a cyclic number.

It is not a de Polignac number, because 9081818093 - 2⁶ = 9081818029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9081818033) 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, 6869096 + ... + 6870417.

It is an arithmetic number, because the mean of its divisors is an integer number (2273889567).

Almost surely, 2^9081818093 is an apocalyptic number.

It is an amenable number.

9081818093 is a deficient number, since it is larger than the sum of its proper divisors (13740175).

9081818093 is a wasteful number, since it uses less digits than its factorization.

9081818093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13740174.

The product of its (nonzero) digits is 124416, while the sum is 47.

The square root of 9081818093 is about 95298.5734048522. The cubic root of 9081818093 is about 2086.3680955894.

The spelling of 9081818093 in words is "nine billion, eighty-one million, eight hundred eighteen thousand, ninety-three".