161203952 has 80 divisors (see below), whose sum is σ = 391849920. Its totient is φ = 62539776.

The previous prime is 161203949. The next prime is 161203969. The reversal of 161203952 is 259302161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76124 + ... + 78212.

It is an arithmetic number, because the mean of its divisors is an integer number (4898124).

Almost surely, 2^161203952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161203952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195924960).

161203952 is an abundant number, since it is smaller than the sum of its proper divisors (230645968).

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

161203952 is a wasteful number, since it uses less digits than its factorization.

161203952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170 (or 2164 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 161203952 is about 12696.6118315084. The cubic root of 161203952 is about 544.2418006673.

The spelling of 161203952 in words is "one hundred sixty-one million, two hundred three thousand, nine hundred fifty-two".