220518916 has 12 divisors (see below), whose sum is σ = 386050588. Its totient is φ = 110218752.

The previous prime is 220518887. The next prime is 220518943. The reversal of 220518916 is 619815022.

220518916 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 83722500 + 136796416 = 9150^2 + 11696^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4300 + ... + 21436.

Almost surely, 2^220518916 is an apocalyptic number.

It is an amenable number.

220518916 is a deficient number, since it is larger than the sum of its proper divisors (165531672).

220518916 is a wasteful number, since it uses less digits than its factorization.

220518916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20358 (or 20356 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 220518916 is about 14849.8793261090. The cubic root of 220518916 is about 604.1553370041.

The spelling of 220518916 in words is "two hundred twenty million, five hundred eighteen thousand, nine hundred sixteen".