218148015 has 8 divisors (see below), whose sum is σ = 349036848. Its totient is φ = 116345600.

The previous prime is 218147959. The next prime is 218148019. The reversal of 218148015 is 510841812.

It is a happy number.

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

It is not a de Polignac number, because 218148015 - 2¹⁷ = 218016943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218148019) 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, 7271586 + ... + 7271615.

It is an arithmetic number, because the mean of its divisors is an integer number (43629606).

Almost surely, 2^218148015 is an apocalyptic number.

218148015 is a deficient number, since it is larger than the sum of its proper divisors (130888833).

218148015 is a wasteful number, since it uses less digits than its factorization.

218148015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14543209.

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 218148015 is about 14769.8346300830. The cubic root of 218148015 is about 601.9823460716.

Adding to 218148015 its reverse (510841812), we get a palindrome (728989827).

The spelling of 218148015 in words is "two hundred eighteen million, one hundred forty-eight thousand, fifteen".