202161798 has 16 divisors (see below), whose sum is σ = 449248560. Its totient is φ = 67387248.

The previous prime is 202161787. The next prime is 202161803. The reversal of 202161798 is 897161202.

202161798 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1871815 + ... + 1871922.

It is an arithmetic number, because the mean of its divisors is an integer number (28078035).

Almost surely, 2^202161798 is an apocalyptic number.

202161798 is an abundant number, since it is smaller than the sum of its proper divisors (247086762).

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

202161798 is a wasteful number, since it uses less digits than its factorization.

202161798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743748 (or 3743742 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 202161798 is about 14218.3612979837. The cubic root of 202161798 is about 586.9030464605.

The spelling of 202161798 in words is "two hundred two million, one hundred sixty-one thousand, seven hundred ninety-eight".