218980489 has 8 divisors (see below), whose sum is σ = 269514560. Its totient is φ = 173259216.

The previous prime is 218980481. The next prime is 218980499. The reversal of 218980489 is 984089812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 218980489 - 2³ = 218980481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (218980481) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1203099 + ... + 1203280.

It is an arithmetic number, because the mean of its divisors is an integer number (33689320).

Almost surely, 2^218980489 is an apocalyptic number.

It is an amenable number.

218980489 is a deficient number, since it is larger than the sum of its proper divisors (50534071).

218980489 is a wasteful number, since it uses less digits than its factorization.

218980489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406399.

The product of its (nonzero) digits is 331776, while the sum is 49.

The square root of 218980489 is about 14797.9893566660. The cubic root of 218980489 is about 602.7471151055.

The spelling of 218980489 in words is "two hundred eighteen million, nine hundred eighty thousand, four hundred eighty-nine".