213837913 has 8 divisors (see below), whose sum is σ = 225893600. Its totient is φ = 201862368.

The previous prime is 213837893. The next prime is 213837929. The reversal of 213837913 is 319738312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213837913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213837413) 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, 14508 + ... + 25261.

It is an arithmetic number, because the mean of its divisors is an integer number (28236700).

Almost surely, 2^213837913 is an apocalyptic number.

It is an amenable number.

213837913 is a deficient number, since it is larger than the sum of its proper divisors (12055687).

213837913 is a wasteful number, since it uses less digits than its factorization.

213837913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40071.

The product of its digits is 27216, while the sum is 37.

The square root of 213837913 is about 14623.1977692979. The cubic root of 213837913 is about 597.9913506428.

The spelling of 213837913 in words is "two hundred thirteen million, eight hundred thirty-seven thousand, nine hundred thirteen".