163009506 has 48 divisors (see below), whose sum is σ = 361704672. Its totient is φ = 48935040.

The previous prime is 163009499. The next prime is 163009513. The reversal of 163009506 is 605900361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (163009499) and next prime (163009513).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81045 + ... + 83031.

It is an arithmetic number, because the mean of its divisors is an integer number (7535514).

Almost surely, 2^163009506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163009506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180852336).

163009506 is an abundant number, since it is smaller than the sum of its proper divisors (198695166).

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

163009506 is a wasteful number, since it uses less digits than its factorization.

163009506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127 (or 2116 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 163009506 is about 12767.5176130679. The cubic root of 163009506 is about 546.2661759510.

Adding to 163009506 its reverse (605900361), we get a palindrome (768909867).

The spelling of 163009506 in words is "one hundred sixty-three million, nine thousand, five hundred six".