161119008 has 72 divisors (see below), whose sum is σ = 467970048. Its totient is φ = 52559232.

The previous prime is 161118977. The next prime is 161119009. The reversal of 161119008 is 800911161.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (161119009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7585 + ... + 19487.

It is an arithmetic number, because the mean of its divisors is an integer number (6499584).

Almost surely, 2^161119008 is an apocalyptic number.

161119008 is a gapful number since it is divisible by the number (18) 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 161119008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233985024).

161119008 is an abundant number, since it is smaller than the sum of its proper divisors (306851040).

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

161119008 is a wasteful number, since it uses less digits than its factorization.

161119008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11966 (or 11955 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 27.

The square root of 161119008 is about 12693.2662463213. The cubic root of 161119008 is about 544.1461905258.

The spelling of 161119008 in words is "one hundred sixty-one million, one hundred nineteen thousand, eight".