201930218 has 16 divisors (see below), whose sum is σ = 357333504. Its totient is φ = 83749680.

The previous prime is 201930203. The next prime is 201930247. The reversal of 201930218 is 812039102.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232205 + ... + 233072.

It is an arithmetic number, because the mean of its divisors is an integer number (22333344).

Almost surely, 2^201930218 is an apocalyptic number.

201930218 is a deficient number, since it is larger than the sum of its proper divisors (155403286).

201930218 is a wasteful number, since it uses less digits than its factorization.

201930218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465317.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 201930218 is about 14210.2152693054. The cubic root of 201930218 is about 586.6788581460.

The spelling of 201930218 in words is "two hundred one million, nine hundred thirty thousand, two hundred eighteen".