8180120273 has 4 divisors (see below), whose sum is σ = 8809360308. Its totient is φ = 7550880240.

The previous prime is 8180120243. The next prime is 8180120341. The reversal of 8180120273 is 3720210818.

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 4356924049 + 3823196224 = 66007^2 + 61832^2 .

It is a cyclic number.

It is not a de Polignac number, because 8180120273 - 2⁶ = 8180120209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8180120203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314619998 + ... + 314620023.

It is an arithmetic number, because the mean of its divisors is an integer number (2202340077).

Almost surely, 2^8180120273 is an apocalyptic number.

It is an amenable number.

8180120273 is a deficient number, since it is larger than the sum of its proper divisors (629240035).

8180120273 is a wasteful number, since it uses less digits than its factorization.

8180120273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629240034.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 8180120273 is about 90444.0173422211. The cubic root of 8180120273 is about 2014.8987606223.

The spelling of 8180120273 in words is "eight billion, one hundred eighty million, one hundred twenty thousand, two hundred seventy-three".