168643692 has 54 divisors (see below), whose sum is σ = 495897948. Its totient is φ = 48183408.

The previous prime is 168643679. The next prime is 168643693. The reversal of 168643692 is 296346861.

It is not an unprimeable number, because it can be changed into a prime (168643693) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 46038 + ... + 49565.

Almost surely, 2^168643692 is an apocalyptic number.

168643692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

168643692 is an abundant number, since it is smaller than the sum of its proper divisors (327254256).

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

168643692 is a wasteful number, since it uses less digits than its factorization.

168643692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95627 (or 95615 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 168643692 is about 12986.2886153050. The cubic root of 168643692 is about 552.4886583396.

The spelling of 168643692 in words is "one hundred sixty-eight million, six hundred forty-three thousand, six hundred ninety-two".