168194472 has 16 divisors (see below), whose sum is σ = 420486240. Its totient is φ = 56064816.

The previous prime is 168194459. The next prime is 168194483. The reversal of 168194472 is 274491861.

It is a super-2 number, since 2×168194472² = 56578760822717568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3504028 + ... + 3504075.

It is an arithmetic number, because the mean of its divisors is an integer number (26280390).

Almost surely, 2^168194472 is an apocalyptic number.

168194472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

168194472 is an abundant number, since it is smaller than the sum of its proper divisors (252291768).

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

168194472 is a wasteful number, since it uses less digits than its factorization.

168194472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7008112 (or 7008108 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 168194472 is about 12968.9811473377. The cubic root of 168194472 is about 551.9976632961.

The spelling of 168194472 in words is "one hundred sixty-eight million, one hundred ninety-four thousand, four hundred seventy-two".