218038971158 has 8 divisors (see below), whose sum is σ = 330115078152. Its totient is φ = 108000611776.

The previous prime is 218038971149. The next prime is 218038971173. The reversal of 218038971158 is 851179830812.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509436635 + ... + 509437062.

It is an arithmetic number, because the mean of its divisors is an integer number (41264384769).

Almost surely, 2^218038971158 is an apocalyptic number.

218038971158 is a deficient number, since it is larger than the sum of its proper divisors (112076106994).

218038971158 is a wasteful number, since it uses less digits than its factorization.

218038971158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018873806.

The product of its (nonzero) digits is 967680, while the sum is 53.

The spelling of 218038971158 in words is "two hundred eighteen billion, thirty-eight million, nine hundred seventy-one thousand, one hundred fifty-eight".