16222687938 has 30 divisors (see below), whose sum is σ = 36354470691. Its totient is φ = 5407022268.

The previous prime is 16222687927. The next prime is 16222687951. The reversal of 16222687938 is 83978622261.

16222687938 is a `hidden beast` number, since 1 + 622 + 2 + 6 + 8 + 7 + 9 + 3 + 8 = 666.

16222687938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8111343969 + 8111343969 = 90063^2 + 90063^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=90063.

It is a super-3 number, since 3×16222687938³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1616131 + ... + 1626137.

Almost surely, 2^16222687938 is an apocalyptic number.

16222687938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16222687938 is an abundant number, since it is smaller than the sum of its proper divisors (20131782753).

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

16222687938 is an frugal number, since it uses more digits than its factorization.

16222687938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20028 (or 10012 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 16222687938 in words is "sixteen billion, two hundred twenty-two million, six hundred eighty-seven thousand, nine hundred thirty-eight".