163390992 has 40 divisors (see below), whose sum is σ = 423333024. Its totient is φ = 54303744.

The previous prime is 163390991. The next prime is 163391023. The reversal of 163390992 is 299093361.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (163390991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12123 + ... + 21765.

Almost surely, 2^163390992 is an apocalyptic number.

163390992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

163390992 is an abundant number, since it is smaller than the sum of its proper divisors (259942032).

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

163390992 is a wasteful number, since it uses less digits than its factorization.

163390992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10007 (or 10001 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 42.

The square root of 163390992 is about 12782.4485917214. The cubic root of 163390992 is about 546.6919804525.

The spelling of 163390992 in words is "one hundred sixty-three million, three hundred ninety thousand, nine hundred ninety-two".