213858653 has 4 divisors (see below), whose sum is σ = 215857440. Its totient is φ = 211859868.

The previous prime is 213858647. The next prime is 213858719. The reversal of 213858653 is 356858312.

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 213858653 - 2⁴ = 213858637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213858653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213858613) 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, 999233 + ... + 999446.

It is an arithmetic number, because the mean of its divisors is an integer number (53964360).

Almost surely, 2^213858653 is an apocalyptic number.

It is an amenable number.

213858653 is a deficient number, since it is larger than the sum of its proper divisors (1998787).

213858653 is a wasteful number, since it uses less digits than its factorization.

213858653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998786.

The product of its digits is 172800, while the sum is 41.

The square root of 213858653 is about 14623.9068993207. The cubic root of 213858653 is about 598.0106829484.

The spelling of 213858653 in words is "two hundred thirteen million, eight hundred fifty-eight thousand, six hundred fifty-three".