163143507 has 4 divisors (see below), whose sum is σ = 217524680. Its totient is φ = 108762336.

The previous prime is 163143503. The next prime is 163143517. The reversal of 163143507 is 705341361.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 163143507 - 2² = 163143503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163143503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27190582 + ... + 27190587.

It is an arithmetic number, because the mean of its divisors is an integer number (54381170).

Almost surely, 2^163143507 is an apocalyptic number.

163143507 is a deficient number, since it is larger than the sum of its proper divisors (54381173).

163143507 is an equidigital number, since it uses as much as digits as its factorization.

163143507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54381172.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 163143507 is about 12772.7642662033. The cubic root of 163143507 is about 546.4158199132.

Adding to 163143507 its reverse (705341361), we get a palindrome (868484868).

The spelling of 163143507 in words is "one hundred sixty-three million, one hundred forty-three thousand, five hundred seven".