163220516 has 12 divisors (see below), whose sum is σ = 285737088. Its totient is φ = 81581352.

The previous prime is 163220513. The next prime is 163220543. The reversal of 163220516 is 615022361.

It is not an unprimeable number, because it can be changed into a prime (163220513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10085 + ... + 20691.

It is an arithmetic number, because the mean of its divisors is an integer number (23811424).

Almost surely, 2^163220516 is an apocalyptic number.

It is an amenable number.

163220516 is a deficient number, since it is larger than the sum of its proper divisors (122516572).

163220516 is a wasteful number, since it uses less digits than its factorization.

163220516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14458 (or 14456 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 163220516 is about 12775.7784890002. The cubic root of 163220516 is about 546.5017816891.

Adding to 163220516 its reverse (615022361), we get a palindrome (778242877).

The spelling of 163220516 in words is "one hundred sixty-three million, two hundred twenty thousand, five hundred sixteen".