389124681 has 16 divisors (see below), whose sum is σ = 566542080. Its totient is φ = 235607120.

The previous prime is 389124661. The next prime is 389124683. The reversal of 389124681 is 186421983.

It is a cyclic number.

It is not a de Polignac number, because 389124681 - 2²³ = 380736073 is a prime.

It is a super-2 number, since 2×389124681² = 302836034726703522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (389124683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33310 + ... + 43448.

It is an arithmetic number, because the mean of its divisors is an integer number (35408880).

Almost surely, 2^389124681 is an apocalyptic number.

It is an amenable number.

389124681 is a deficient number, since it is larger than the sum of its proper divisors (177417399).

389124681 is a wasteful number, since it uses less digits than its factorization.

389124681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11316.

The product of its digits is 82944, while the sum is 42.

The square root of 389124681 is about 19726.2434589052. The cubic root of 389124681 is about 730.0673491375.

The spelling of 389124681 in words is "three hundred eighty-nine million, one hundred twenty-four thousand, six hundred eighty-one".