386418681 has 40 divisors (see below), whose sum is σ = 639216864. Its totient is φ = 230662080.

The previous prime is 386418679. The next prime is 386418719. The reversal of 386418681 is 186814683.

It is a happy number.

It is not a de Polignac number, because 386418681 - 2¹ = 386418679 is a prime.

It is a super-3 number, since 3×386418681³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (386418581) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 56461 + ... + 62933.

Almost surely, 2^386418681 is an apocalyptic number.

It is an amenable number.

386418681 is a deficient number, since it is larger than the sum of its proper divisors (252798183).

386418681 is a wasteful number, since it uses less digits than its factorization.

386418681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6563 (or 6554 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 386418681 is about 19657.5349675385. The cubic root of 386418681 is about 728.3710981098.

The spelling of 386418681 in words is "three hundred eighty-six million, four hundred eighteen thousand, six hundred eighty-one".