161208160 has 72 divisors (see below), whose sum is σ = 402098256. Its totient is φ = 61067520.

The previous prime is 161208137. The next prime is 161208181. The reversal of 161208160 is 61802161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56365 + ... + 59155.

It is an arithmetic number, because the mean of its divisors is an integer number (5584698).

Almost surely, 2^161208160 is an apocalyptic number.

161208160 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 161208160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201049128).

161208160 is an abundant number, since it is smaller than the sum of its proper divisors (240890096).

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

161208160 is a wasteful number, since it uses less digits than its factorization.

161208160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844 (or 2817 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 161208160 is about 12696.7775439282. Note that the first 3 decimals coincide. The cubic root of 161208160 is about 544.2465361789.

The spelling of 161208160 in words is "one hundred sixty-one million, two hundred eight thousand, one hundred sixty".