218943974038 has 8 divisors (see below), whose sum is σ = 328433933880. Its totient is φ = 109465996080.

The previous prime is 218943974023. The next prime is 218943974057. The reversal of 218943974038 is 830479349812.

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

It is a super-4 number, since 4×218943974038⁴ (a number of 46 digits) contains 4444 as substring.

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, 2949648 + ... + 3022963.

It is an arithmetic number, because the mean of its divisors is an integer number (41054241735).

Almost surely, 2^218943974038 is an apocalyptic number.

218943974038 is a deficient number, since it is larger than the sum of its proper divisors (109489959842).

218943974038 is a wasteful number, since it uses less digits than its factorization.

218943974038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5990942.

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 218943974038 in words is "two hundred eighteen billion, nine hundred forty-three million, nine hundred seventy-four thousand, thirty-eight".