161041600 has 84 divisors (see below), whose sum is σ = 398833848. Its totient is φ = 64000000.

The previous prime is 161041589. The next prime is 161041609. The reversal of 161041600 is 6140161.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (161041609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401400 + ... + 401800.

It is an arithmetic number, because the mean of its divisors is an integer number (4748022).

Almost surely, 2^161041600 is an apocalyptic number.

161041600 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 161041600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199416924).

161041600 is an abundant number, since it is smaller than the sum of its proper divisors (237792248).

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

161041600 is a wasteful number, since it uses less digits than its factorization.

161041600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 161041600 is about 12690.2167042175. The cubic root of 161041600 is about 544.0590333860.

Adding to 161041600 its reverse (6140161), we get a palindrome (167181761).

The spelling of 161041600 in words is "one hundred sixty-one million, forty-one thousand, six hundred".