201838995 has 24 divisors (see below), whose sum is σ = 368269200. Its totient is φ = 101981376.

The previous prime is 201838993. The next prime is 201839003. The reversal of 201838995 is 599838102.

It is a happy number.

It is not a de Polignac number, because 201838995 - 2¹ = 201838993 is a prime.

It is a super-2 number, since 2×201838995² = 81477959805220050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 201838995.

It is not an unprimeable number, because it can be changed into a prime (201838991) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 117180 + ... + 118889.

It is an arithmetic number, because the mean of its divisors is an integer number (15344550).

Almost surely, 2^201838995 is an apocalyptic number.

201838995 is a deficient number, since it is larger than the sum of its proper divisors (166430205).

201838995 is a wasteful number, since it uses less digits than its factorization.

201838995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236099 (or 236096 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 201838995 is about 14207.0051383112. The cubic root of 201838995 is about 586.5904997894.

The spelling of 201838995 in words is "two hundred one million, eight hundred thirty-eight thousand, nine hundred ninety-five".