218980115 has 8 divisors (see below), whose sum is σ = 264695040. Its totient is φ = 173904832.

The previous prime is 218980109. The next prime is 218980141. The reversal of 218980115 is 511089812.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218980115 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159155 + ... + 160524.

It is an arithmetic number, because the mean of its divisors is an integer number (33086880).

Almost surely, 2^218980115 is an apocalyptic number.

218980115 is a deficient number, since it is larger than the sum of its proper divisors (45714925).

218980115 is a wasteful number, since it uses less digits than its factorization.

218980115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319821.

The product of its (nonzero) digits is 5760, while the sum is 35.

The square root of 218980115 is about 14797.9767198087. The cubic root of 218980115 is about 602.7467719585.

The spelling of 218980115 in words is "two hundred eighteen million, nine hundred eighty thousand, one hundred fifteen".