218949619514 has 16 divisors (see below), whose sum is σ = 329687810280. Its totient is φ = 109053788160.

The previous prime is 218949619513. The next prime is 218949619519. The reversal of 218949619514 is 415916949812.

It can be written as a sum of positive squares in 4 ways, for example, as 155184784225 + 63764835289 = 393935^2 + 252517^2 .

It is not an unprimeable number, because it can be changed into a prime (218949619513) 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, 5074994 + ... + 5117954.

Almost surely, 2^218949619514 is an apocalyptic number.

218949619514 is a deficient number, since it is larger than the sum of its proper divisors (110738190766).

218949619514 is a wasteful number, since it uses less digits than its factorization.

218949619514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52705.

The product of its digits is 5598720, while the sum is 59.

The spelling of 218949619514 in words is "two hundred eighteen billion, nine hundred forty-nine million, six hundred nineteen thousand, five hundred fourteen".