218958683228 has 6 divisors (see below), whose sum is σ = 383177695656. Its totient is φ = 109479341612.

The previous prime is 218958683221. The next prime is 218958683239. The reversal of 218958683228 is 822386859812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218958683221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27369835400 + ... + 27369835407.

It is an arithmetic number, because the mean of its divisors is an integer number (63862949276).

Almost surely, 2^218958683228 is an apocalyptic number.

It is an amenable number.

218958683228 is a deficient number, since it is larger than the sum of its proper divisors (164219012428).

218958683228 is a wasteful number, since it uses less digits than its factorization.

218958683228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54739670811 (or 54739670809 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 62.

The spelling of 218958683228 in words is "two hundred eighteen billion, nine hundred fifty-eight million, six hundred eighty-three thousand, two hundred twenty-eight".