201838885 has 8 divisors (see below), whose sum is σ = 248753016. Its totient is φ = 157106880.

The previous prime is 201838883. The next prime is 201838913. The reversal of 201838885 is 588838102.

It can be written as a sum of positive squares in 4 ways, for example, as 19210689 + 182628196 = 4383^2 + 13514^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201838885 - 2¹ = 201838883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201838883) 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, 545326 + ... + 545695.

It is an arithmetic number, because the mean of its divisors is an integer number (31094127).

Almost surely, 2^201838885 is an apocalyptic number.

It is an amenable number.

201838885 is a deficient number, since it is larger than the sum of its proper divisors (46914131).

201838885 is a wasteful number, since it uses less digits than its factorization.

201838885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091063.

The product of its (nonzero) digits is 122880, while the sum is 43.

The square root of 201838885 is about 14207.0012669810. The cubic root of 201838885 is about 586.5903932277.

The spelling of 201838885 in words is "two hundred one million, eight hundred thirty-eight thousand, eight hundred eighty-five".