218413019 has 8 divisors (see below), whose sum is σ = 239648112. Its totient is φ = 197407840.

The previous prime is 218412989. The next prime is 218413043. The reversal of 218413019 is 910314812.

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

It is a cyclic number.

It is not a de Polignac number, because 218413019 - 2¹⁶ = 218347483 is a prime.

It is a super-2 number, since 2×218413019² = 95408493737388722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 218412982 and 218413000.

It is not an unprimeable number, because it can be changed into a prime (218413049) 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, 55484 + ... + 59289.

It is an arithmetic number, because the mean of its divisors is an integer number (29956014).

Almost surely, 2^218413019 is an apocalyptic number.

218413019 is a deficient number, since it is larger than the sum of its proper divisors (21235093).

218413019 is a wasteful number, since it uses less digits than its factorization.

218413019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114957.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 218413019 is about 14778.8030300157. The cubic root of 218413019 is about 602.2260081185.

The spelling of 218413019 in words is "two hundred eighteen million, four hundred thirteen thousand, nineteen".