163128616 has 16 divisors (see below), whose sum is σ = 349561440. Its totient is φ = 69912240.

The previous prime is 163128613. The next prime is 163128631. The reversal of 163128616 is 616821361.

It is a happy number.

It is a super-2 number, since 2×163128616² = 53221890716150912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163128611) 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, 1456450 + ... + 1456561.

It is an arithmetic number, because the mean of its divisors is an integer number (21847590).

Almost surely, 2^163128616 is an apocalyptic number.

It is an amenable number.

163128616 is an abundant number, since it is smaller than the sum of its proper divisors (186432824).

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

163128616 is a wasteful number, since it uses less digits than its factorization.

163128616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913024 (or 2913020 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 163128616 is about 12772.1813328812. The cubic root of 163128616 is about 546.3991946208.

Adding to 163128616 its reverse (616821361), we get a palindrome (779949977).

The spelling of 163128616 in words is "one hundred sixty-three million, one hundred twenty-eight thousand, six hundred sixteen".