518166946 has 32 divisors (see below), whose sum is σ = 864691200. Its totient is φ = 230907600.

The previous prime is 518166923. The next prime is 518166949. The reversal of 518166946 is 649661815.

It is a junction number, because it is equal to n+sod(n) for n = 518166896 and 518166905.

It is not an unprimeable number, because it can be changed into a prime (518166949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310005 + ... + 311671.

It is an arithmetic number, because the mean of its divisors is an integer number (27021600).

Almost surely, 2^518166946 is an apocalyptic number.

518166946 is a deficient number, since it is larger than the sum of its proper divisors (346524254).

518166946 is a wasteful number, since it uses less digits than its factorization.

518166946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950.

The product of its digits is 311040, while the sum is 46.

The square root of 518166946 is about 22763.2806510837. The cubic root of 518166946 is about 803.1991408609.

It can be divided in two parts, 5181 and 66946, that added together give a palindrome (72127).

The spelling of 518166946 in words is "five hundred eighteen million, one hundred sixty-six thousand, nine hundred forty-six".