201838940 has 12 divisors (see below), whose sum is σ = 423861816. Its totient is φ = 80735568.

The previous prime is 201838937. The next prime is 201838963. The reversal of 201838940 is 49838102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 201838940.

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 3 ways as a sum of consecutive naturals, for example, 5045954 + ... + 5045993.

It is an arithmetic number, because the mean of its divisors is an integer number (35321818).

Almost surely, 2^201838940 is an apocalyptic number.

201838940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201838940 is an abundant number, since it is smaller than the sum of its proper divisors (222022876).

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

201838940 is a wasteful number, since it uses less digits than its factorization.

201838940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10091956 (or 10091954 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 201838940 is about 14207.0032026462. The cubic root of 201838940 is about 586.5904465085.

The spelling of 201838940 in words is "two hundred one million, eight hundred thirty-eight thousand, nine hundred forty".