201829181920 has 48 divisors (see below), whose sum is σ = 479746789200. Its totient is φ = 80236376064.

The previous prime is 201829181881. The next prime is 201829181933. The reversal of 201829181920 is 29181928102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3843345 + ... + 3895504.

It is an arithmetic number, because the mean of its divisors is an integer number (9994724775).

Almost surely, 2^201829181920 is an apocalyptic number.

201829181920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201829181920 is an abundant number, since it is smaller than the sum of its proper divisors (277917607280).

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

201829181920 is a wasteful number, since it uses less digits than its factorization.

201829181920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7739027 (or 7739019 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 43.

The spelling of 201829181920 in words is "two hundred one billion, eight hundred twenty-nine million, one hundred eighty-one thousand, nine hundred twenty".