163111960 has 128 divisors (see below), whose sum is σ = 427680000. Its totient is φ = 55365120.

The previous prime is 163111937. The next prime is 163111967. The reversal of 163111960 is 69111361.

It is a super-2 number, since 2×163111960² = 53211022990083200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163111967) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 911151 + ... + 911329.

It is an arithmetic number, because the mean of its divisors is an integer number (3341250).

Almost surely, 2^163111960 is an apocalyptic number.

163111960 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 163111960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213840000).

163111960 is an abundant number, since it is smaller than the sum of its proper divisors (264568040).

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

163111960 is a wasteful number, since it uses less digits than its factorization.

163111960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 163111960 is about 12771.5292741316. The cubic root of 163111960 is about 546.3805975674.

The spelling of 163111960 in words is "one hundred sixty-three million, one hundred eleven thousand, nine hundred sixty".