203161950 has 72 divisors (see below), whose sum is σ = 548402400. Its totient is φ = 53921280.

The previous prime is 203161949. The next prime is 203161961. The reversal of 203161950 is 59161302.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 106606 + ... + 108494.

It is an arithmetic number, because the mean of its divisors is an integer number (7616700).

Almost surely, 2^203161950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203161950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274201200).

203161950 is an abundant number, since it is smaller than the sum of its proper divisors (345240450).

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

203161950 is a wasteful number, since it uses less digits than its factorization.

203161950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146 (or 2138 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 203161950 is about 14253.4890465458. The cubic root of 203161950 is about 587.8693135914.

The spelling of 203161950 in words is "two hundred three million, one hundred sixty-one thousand, nine hundred fifty".