386842381 has 8 divisors (see below), whose sum is σ = 394833920. Its totient is φ = 378928368.

The previous prime is 386842373. The next prime is 386842387. The reversal of 386842381 is 183248683.

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 386842381 - 2³ = 386842373 is a prime.

It is a super-2 number, since 2×386842381² = 299294055475498322, which 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 (386842387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9246 + ... + 29311.

It is an arithmetic number, because the mean of its divisors is an integer number (49354240).

Almost surely, 2^386842381 is an apocalyptic number.

It is an amenable number.

386842381 is a deficient number, since it is larger than the sum of its proper divisors (7991539).

386842381 is a wasteful number, since it uses less digits than its factorization.

386842381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38763.

The product of its digits is 221184, while the sum is 43.

The square root of 386842381 is about 19668.3090528901. The cubic root of 386842381 is about 728.6372154268.

The spelling of 386842381 in words is "three hundred eighty-six million, eight hundred forty-two thousand, three hundred eighty-one".