518379161 has 4 divisors (see below), whose sum is σ = 519030372. Its totient is φ = 517727952.

The previous prime is 518379151. The next prime is 518379187. The reversal of 518379161 is 161973815.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161973815 = 5 ⋅32394763.

It can be written as a sum of positive squares in 2 ways, for example, as 192793225 + 325585936 = 13885^2 + 18044^2 .

It is a cyclic number.

It is not a de Polignac number, because 518379161 - 2⁶ = 518379097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (518379101) 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, 324410 + ... + 326003.

It is an arithmetic number, because the mean of its divisors is an integer number (129757593).

Almost surely, 2^518379161 is an apocalyptic number.

It is an amenable number.

518379161 is a deficient number, since it is larger than the sum of its proper divisors (651211).

518379161 is an equidigital number, since it uses as much as digits as its factorization.

518379161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651210.

The product of its digits is 45360, while the sum is 41.

The square root of 518379161 is about 22767.9415187232. The cubic root of 518379161 is about 803.3087758238.

The spelling of 518379161 in words is "five hundred eighteen million, three hundred seventy-nine thousand, one hundred sixty-one".