218445046 has 16 divisors (see below), whose sum is σ = 331242048. Its totient is φ = 108035200.

The previous prime is 218445043. The next prime is 218445103. The reversal of 218445046 is 640544812.

218445046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218445043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205356 + ... + 206416.

It is an arithmetic number, because the mean of its divisors is an integer number (20702628).

Almost surely, 2^218445046 is an apocalyptic number.

218445046 is a deficient number, since it is larger than the sum of its proper divisors (112797002).

218445046 is a wasteful number, since it uses less digits than its factorization.

218445046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087.

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 218445046 is about 14779.8865354237. The cubic root of 218445046 is about 602.2554424898.

Adding to 218445046 its reverse (640544812), we get a palindrome (858989858).

The spelling of 218445046 in words is "two hundred eighteen million, four hundred forty-five thousand, forty-six".