218102190 has 32 divisors (see below), whose sum is σ = 524658816. Its totient is φ = 58025760.

The previous prime is 218102141. The next prime is 218102201. The reversal of 218102190 is 91201812.

It is a super-2 number, since 2×218102190² = 95137130565592200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 218102190.

It is a congruent number.

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, 5085 + ... + 21495.

It is an arithmetic number, because the mean of its divisors is an integer number (16395588).

Almost surely, 2^218102190 is an apocalyptic number.

218102190 is an abundant number, since it is smaller than the sum of its proper divisors (306556626).

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

218102190 is a wasteful number, since it uses less digits than its factorization.

218102190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16864.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 218102190 is about 14768.2832448460. The cubic root of 218102190 is about 601.9401915542.

The spelling of 218102190 in words is "two hundred eighteen million, one hundred two thousand, one hundred ninety".