218068146 has 32 divisors (see below), whose sum is σ = 513103680. Its totient is φ = 68413248.

The previous prime is 218068091. The next prime is 218068153. The reversal of 218068146 is 641860812.

It is a self number, because there is not a number n which added to its sum of digits gives 218068146.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117856 + ... + 119691.

It is an arithmetic number, because the mean of its divisors is an integer number (16034490).

Almost surely, 2^218068146 is an apocalyptic number.

218068146 is an abundant number, since it is smaller than the sum of its proper divisors (295035534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218068146 is a wasteful number, since it uses less digits than its factorization.

218068146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237575 (or 237569 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 218068146 is about 14767.1305946687. The cubic root of 218068146 is about 601.9088705815.

The spelling of 218068146 in words is "two hundred eighteen million, sixty-eight thousand, one hundred forty-six".