518020941 has 4 divisors (see below), whose sum is σ = 690694592. Its totient is φ = 345347292.

The previous prime is 518020931. The next prime is 518020963. The reversal of 518020941 is 149020815.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 518020941 - 2⁷ = 518020813 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 518020899 and 518020908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518020901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86336821 + ... + 86336826.

It is an arithmetic number, because the mean of its divisors is an integer number (172673648).

Almost surely, 2^518020941 is an apocalyptic number.

It is an amenable number.

518020941 is a deficient number, since it is larger than the sum of its proper divisors (172673651).

518020941 is a wasteful number, since it uses less digits than its factorization.

518020941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172673650.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 518020941 is about 22760.0733961910. The cubic root of 518020941 is about 803.1236940654.

The spelling of 518020941 in words is "five hundred eighteen million, twenty thousand, nine hundred forty-one".