201891833980 has 24 divisors (see below), whose sum is σ = 424089576288. Its totient is φ = 80734500288.

The previous prime is 201891833977. The next prime is 201891833989. The reversal of 201891833980 is 89338198102.

201891833980 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 not an unprimeable number, because it can be changed into a prime (201891833989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1315024 + ... + 1460503.

It is an arithmetic number, because the mean of its divisors is an integer number (17670399012).

Almost surely, 2^201891833980 is an apocalyptic number.

201891833980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201891833980 is an abundant number, since it is smaller than the sum of its proper divisors (222197742308).

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

201891833980 is a wasteful number, since it uses less digits than its factorization.

201891833980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779173 (or 2779171 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 52.

The spelling of 201891833980 in words is "two hundred one billion, eight hundred ninety-one million, eight hundred thirty-three thousand, nine hundred eighty".