218433982 has 16 divisors (see below), whose sum is σ = 353188080. Its totient is φ = 100720512.

The previous prime is 218433959. The next prime is 218433983. The reversal of 218433982 is 289334812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218433983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29398 + ... + 36070.

It is an arithmetic number, because the mean of its divisors is an integer number (22074255).

Almost surely, 2^218433982 is an apocalyptic number.

218433982 is a deficient number, since it is larger than the sum of its proper divisors (134754098).

218433982 is a wasteful number, since it uses less digits than its factorization.

218433982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7947.

The product of its digits is 82944, while the sum is 40.

The square root of 218433982 is about 14779.5122382303. The cubic root of 218433982 is about 602.2452744608.

The spelling of 218433982 in words is "two hundred eighteen million, four hundred thirty-three thousand, nine hundred eighty-two".