823161853 has 8 divisors (see below), whose sum is σ = 833429376. Its totient is φ = 812958000.

The previous prime is 823161841. The next prime is 823161869. The reversal of 823161853 is 358161328.

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-823161853 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 (823161883) 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, 10368 + ... + 41878.

It is an arithmetic number, because the mean of its divisors is an integer number (104178672).

Almost surely, 2^823161853 is an apocalyptic number.

It is an amenable number.

823161853 is a deficient number, since it is larger than the sum of its proper divisors (10267523).

823161853 is a wasteful number, since it uses less digits than its factorization.

823161853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31835.

The product of its digits is 34560, while the sum is 37.

The square root of 823161853 is about 28690.7973573409. The cubic root of 823161853 is about 937.1916532141.

The spelling of 823161853 in words is "eight hundred twenty-three million, one hundred sixty-one thousand, eight hundred fifty-three".