168819822 has 16 divisors (see below), whose sum is σ = 375155280. Its totient is φ = 56273256.

The previous prime is 168819821. The next prime is 168819829. The reversal of 168819822 is 228918861.

It is a happy number.

It is a super-2 number, since 2×168819822² = 57000264600223368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168819821) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1563093 + ... + 1563200.

It is an arithmetic number, because the mean of its divisors is an integer number (23447205).

Almost surely, 2^168819822 is an apocalyptic number.

168819822 is an abundant number, since it is smaller than the sum of its proper divisors (206335458).

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

168819822 is a wasteful number, since it uses less digits than its factorization.

168819822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126304 (or 3126298 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 168819822 is about 12993.0682288673. The cubic root of 168819822 is about 552.6809295305.

The spelling of 168819822 in words is "one hundred sixty-eight million, eight hundred nineteen thousand, eight hundred twenty-two".