163199520 has 144 divisors (see below), whose sum is σ = 607606272. Its totient is φ = 39559680.

The previous prime is 163199479. The next prime is 163199527. The reversal of 163199520 is 25991361.

163199520 is a `hidden beast` number, since 16 + 31 + 99 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (163199527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10689 + ... + 20991.

It is an arithmetic number, because the mean of its divisors is an integer number (4219488).

Almost surely, 2^163199520 is an apocalyptic number.

163199520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163199520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303803136).

163199520 is an abundant number, since it is smaller than the sum of its proper divisors (444406752).

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

163199520 is a wasteful number, since it uses less digits than its factorization.

163199520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10335 (or 10324 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 163199520 is about 12774.9567513945. The cubic root of 163199520 is about 546.4783474548.

The spelling of 163199520 in words is "one hundred sixty-three million, one hundred ninety-nine thousand, five hundred twenty".