853618013 has 4 divisors (see below), whose sum is σ = 857663808. Its totient is φ = 849572220.

The previous prime is 853617979. The next prime is 853618039. The reversal of 853618013 is 310816358.

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 a de Polignac number, because none of the positive numbers 2^k-853618013 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 (853618063) 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, 2022581 + ... + 2023002.

It is an arithmetic number, because the mean of its divisors is an integer number (214415952).

Almost surely, 2^853618013 is an apocalyptic number.

It is an amenable number.

853618013 is a deficient number, since it is larger than the sum of its proper divisors (4045795).

853618013 is a wasteful number, since it uses less digits than its factorization.

853618013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4045794.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 853618013 is about 29216.7419983817. The cubic root of 853618013 is about 948.6103460536.

The spelling of 853618013 in words is "eight hundred fifty-three million, six hundred eighteen thousand, thirteen".