163888142 has 8 divisors (see below), whose sum is σ = 268180632. Its totient is φ = 74494600.

The previous prime is 163888121. The next prime is 163888147. The reversal of 163888142 is 241888361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 163888142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163888147) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3724709 + ... + 3724752.

It is an arithmetic number, because the mean of its divisors is an integer number (33522579).

Almost surely, 2^163888142 is an apocalyptic number.

163888142 is a deficient number, since it is larger than the sum of its proper divisors (104292490).

163888142 is a wasteful number, since it uses less digits than its factorization.

163888142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7449474.

The product of its digits is 73728, while the sum is 41.

The square root of 163888142 is about 12801.8804087525. The cubic root of 163888142 is about 547.2458925201.

The spelling of 163888142 in words is "one hundred sixty-three million, eight hundred eighty-eight thousand, one hundred forty-two".