163666392 has 32 divisors (see below), whose sum is σ = 420226800. Its totient is φ = 53080704.

The previous prime is 163666379. The next prime is 163666411. The reversal of 163666392 is 293666361.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91267 + ... + 93042.

Almost surely, 2^163666392 is an apocalyptic number.

163666392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

163666392 is an abundant number, since it is smaller than the sum of its proper divisors (256560408).

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

163666392 is a wasteful number, since it uses less digits than its factorization.

163666392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184355 (or 184351 counting only the distinct ones).

The product of its digits is 209952, while the sum is 42.

The square root of 163666392 is about 12793.2166400792. The cubic root of 163666392 is about 546.9989628189.

The spelling of 163666392 in words is "one hundred sixty-three million, six hundred sixty-six thousand, three hundred ninety-two".