201808218422 has 8 divisors (see below), whose sum is σ = 302728789272. Its totient is φ = 100898622000.

The previous prime is 201808218419. The next prime is 201808218431. The reversal of 201808218422 is 224812808102.

It is a happy number.

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

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, 2697479 + ... + 2771282.

It is an arithmetic number, because the mean of its divisors is an integer number (37841098659).

Almost surely, 2^201808218422 is an apocalyptic number.

201808218422 is a deficient number, since it is larger than the sum of its proper divisors (100920570850).

201808218422 is a wasteful number, since it uses less digits than its factorization.

201808218422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5487214.

The product of its (nonzero) digits is 32768, while the sum is 38.

The spelling of 201808218422 in words is "two hundred one billion, eight hundred eight million, two hundred eighteen thousand, four hundred twenty-two".