201913 has 4 divisors (see below), whose sum is σ = 212560. Its totient is φ = 191268.

The previous prime is 201911. The next prime is 201919. The reversal of 201913 is 319102.

201913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201913 - 2¹ = 201911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5295 + ... + 5332.

It is an arithmetic number, because the mean of its divisors is an integer number (53140).

2²⁰¹⁹¹³ is an apocalyptic number.

It is an amenable number.

201913 is a deficient number, since it is larger than the sum of its proper divisors (10647).

201913 is a wasteful number, since it uses less digits than its factorization.

201913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10646.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 201913 is about 449.3473044317. The cubic root of 201913 is about 58.6662182874. Note that the first 3 decimals are identical.

The spelling of 201913 in words is "two hundred one thousand, nine hundred thirteen".