7823957853 has 4 divisors (see below), whose sum is σ = 10431943808. Its totient is φ = 5215971900.

The previous prime is 7823957833. The next prime is 7823957861. The reversal of 7823957853 is 3587593287.

It is a happy number.

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 not a de Polignac number, because 7823957853 - 2⁹ = 7823957341 is a prime.

It is a super-2 number, since 2×7823957853² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7823957793 and 7823957802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7823957833) 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, 1303992973 + ... + 1303992978.

It is an arithmetic number, because the mean of its divisors is an integer number (2607985952).

Almost surely, 2^7823957853 is an apocalyptic number.

It is an amenable number.

7823957853 is a deficient number, since it is larger than the sum of its proper divisors (2607985955).

7823957853 is a wasteful number, since it uses less digits than its factorization.

7823957853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607985954.

The product of its digits is 12700800, while the sum is 57.

The square root of 7823957853 is about 88453.1393055102. The cubic root of 7823957853 is about 1985.2208788804.

The spelling of 7823957853 in words is "seven billion, eight hundred twenty-three million, nine hundred fifty-seven thousand, eight hundred fifty-three".