386123680181 has 4 divisors (see below), whose sum is σ = 388256960364. Its totient is φ = 383990400000.

The previous prime is 386123680141. The next prime is 386123680207. The reversal of 386123680181 is 181086321683.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12546016081 + 373577664100 = 112009^2 + 611210^2 .

It is a cyclic number.

It is not a de Polignac number, because 386123680181 - 2¹⁴ = 386123663797 is a prime.

It is a super-2 number, since 2×386123680181² (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 (386123680141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066639820 + ... + 1066640181.

It is an arithmetic number, because the mean of its divisors is an integer number (97064240091).

Almost surely, 2^386123680181 is an apocalyptic number.

It is an amenable number.

386123680181 is a deficient number, since it is larger than the sum of its proper divisors (2133280183).

386123680181 is a wasteful number, since it uses less digits than its factorization.

386123680181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133280182.

The product of its (nonzero) digits is 331776, while the sum is 47.

The spelling of 386123680181 in words is "three hundred eighty-six billion, one hundred twenty-three million, six hundred eighty thousand, one hundred eighty-one".