218873542 has 8 divisors (see below), whose sum is σ = 331216056. Its totient is φ = 108468192.

The previous prime is 218873531. The next prime is 218873587. The reversal of 218873542 is 245378812.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 218873495 and 218873504.

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, 484008 + ... + 484459.

It is an arithmetic number, because the mean of its divisors is an integer number (41402007).

Almost surely, 2^218873542 is an apocalyptic number.

218873542 is a deficient number, since it is larger than the sum of its proper divisors (112342514).

218873542 is a wasteful number, since it uses less digits than its factorization.

218873542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968582.

The product of its digits is 107520, while the sum is 40.

The square root of 218873542 is about 14794.3753501119. The cubic root of 218873542 is about 602.6489747142.

The spelling of 218873542 in words is "two hundred eighteen million, eight hundred seventy-three thousand, five hundred forty-two".