382685867181 has 12 divisors (see below), whose sum is σ = 553027168252. Its totient is φ = 255004514496.

The previous prime is 382685867177. The next prime is 382685867231. The reversal of 382685867181 is 181768586283.

382685867181 is a `hidden beast` number, since 38 + 2 + 6 + 8 + 586 + 7 + 18 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 118756052100 + 263929815081 = 344610^2 + 513741^2 .

It is not a de Polignac number, because 382685867181 - 2² = 382685867177 is a prime.

It is a super-2 number, since 2×382685867181² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (382685867381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9929446 + ... + 9967911.

Almost surely, 2^382685867181 is an apocalyptic number.

It is an amenable number.

382685867181 is a deficient number, since it is larger than the sum of its proper divisors (170341301071).

382685867181 is a wasteful number, since it uses less digits than its factorization.

382685867181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19899500 (or 19899497 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 63.

The spelling of 382685867181 in words is "three hundred eighty-two billion, six hundred eighty-five million, eight hundred sixty-seven thousand, one hundred eighty-one".