16391222238 has 16 divisors (see below), whose sum is σ = 32789909376. Its totient is φ = 5462496600.

The previous prime is 16391222213. The next prime is 16391222273. The reversal of 16391222238 is 83222219361.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16391222196 and 16391222205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282288 + ... + 335363.

It is an arithmetic number, because the mean of its divisors is an integer number (2049369336).

Almost surely, 2^16391222238 is an apocalyptic number.

16391222238 is an abundant number, since it is smaller than the sum of its proper divisors (16398687138).

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

16391222238 is a wasteful number, since it uses less digits than its factorization.

16391222238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622079.

The product of its digits is 62208, while the sum is 39.

The spelling of 16391222238 in words is "sixteen billion, three hundred ninety-one million, two hundred twenty-two thousand, two hundred thirty-eight".