161193960 has 192 divisors, whose sum is σ = 548009280. Its totient is φ = 41057280.

The previous prime is 161193953. The next prime is 161193979. The reversal of 161193960 is 69391161.

161193960 is a `hidden beast` number, since 1 + 611 + 9 + 39 + 6 + 0 = 666.

161193960 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 988839 + ... + 989001.

It is an arithmetic number, because the mean of its divisors is an integer number (2854215).

Almost surely, 2^161193960 is an apocalyptic number.

161193960 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 161193960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274004640).

161193960 is an abundant number, since it is smaller than the sum of its proper divisors (386815320).

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

161193960 is a wasteful number, since it uses less digits than its factorization.

161193960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 161193960 is about 12696.2183346066. The cubic root of 161193960 is about 544.2305557477.

The spelling of 161193960 in words is "one hundred sixty-one million, one hundred ninety-three thousand, nine hundred sixty".