853623481 has 2 divisors, whose sum is σ = 853623482. Its totient is φ = 853623480.

The previous prime is 853623479. The next prime is 853623517. The reversal of 853623481 is 184326358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 791859600 + 61763881 = 28140^2 + 7859^2 .

It is a cyclic number.

It is not a de Polignac number, because 853623481 - 2¹ = 853623479 is a prime.

It is a super-2 number, since 2×853623481² = 1457346094629114722, which contains 22 as substring.

Together with 853623479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (853623461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426811740 + 426811741.

It is an arithmetic number, because the mean of its divisors is an integer number (426811741).

Almost surely, 2^853623481 is an apocalyptic number.

It is an amenable number.

853623481 is a deficient number, since it is larger than the sum of its proper divisors (1).

853623481 is an equidigital number, since it uses as much as digits as its factorization.

853623481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 40.

The square root of 853623481 is about 29216.8355747162. The cubic root of 853623481 is about 948.6123715459.

The spelling of 853623481 in words is "eight hundred fifty-three million, six hundred twenty-three thousand, four hundred eighty-one".