853086981 has 8 divisors (see below), whose sum is σ = 1140672960. Its totient is φ = 567112832.

The previous prime is 853086961. The next prime is 853087009. The reversal of 853086981 is 189680358.

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

It is a cyclic number.

It is not a de Polignac number, because 853086981 - 2²² = 848892677 is a prime.

It is a super-2 number, since 2×853086981² = 1455514794303388722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 853086981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853086961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401721 + ... + 403838.

It is an arithmetic number, because the mean of its divisors is an integer number (142584120).

Almost surely, 2^853086981 is an apocalyptic number.

It is an amenable number.

853086981 is a deficient number, since it is larger than the sum of its proper divisors (287585979).

853086981 is a wasteful number, since it uses less digits than its factorization.

853086981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805915.

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 853086981 is about 29207.6527814201. The cubic root of 853086981 is about 948.4135964785.

The spelling of 853086981 in words is "eight hundred fifty-three million, eighty-six thousand, nine hundred eighty-one".