163689992 has 32 divisors (see below), whose sum is σ = 316910880. Its totient is φ = 79215360.

The previous prime is 163689973. The next prime is 163690001. The reversal of 163689992 is 299986361.

163689992 is nontrivially palindromic in base 7.

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 7 ways as a sum of consecutive naturals, for example, 36767 + ... + 40977.

It is an arithmetic number, because the mean of its divisors is an integer number (9903465).

Almost surely, 2^163689992 is an apocalyptic number.

It is an amenable number.

163689992 is a deficient number, since it is larger than the sum of its proper divisors (153220888).

163689992 is a wasteful number, since it uses less digits than its factorization.

163689992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4373 (or 4369 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 53.

The square root of 163689992 is about 12794.1389706381. The cubic root of 163689992 is about 547.0252531992.

The spelling of 163689992 in words is "one hundred sixty-three million, six hundred eighty-nine thousand, nine hundred ninety-two".