203290164 has 216 divisors, whose sum is σ = 662276160. Its totient is φ = 51448320.

The previous prime is 203290159. The next prime is 203290187. The reversal of 203290164 is 461092302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1798972 + ... + 1799084.

Almost surely, 2^203290164 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 203290164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331138080).

203290164 is an abundant number, since it is smaller than the sum of its proper divisors (458985996).

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

203290164 is a wasteful number, since it uses less digits than its factorization.

203290164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 203290164 is about 14257.9859727803. The cubic root of 203290164 is about 587.9929542402.

The spelling of 203290164 in words is "two hundred three million, two hundred ninety thousand, one hundred sixty-four".