389024326081 has 4 divisors (see below), whose sum is σ = 389328966612. Its totient is φ = 388719685552.

The previous prime is 389024326073. The next prime is 389024326123. The reversal of 389024326081 is 180623420983.

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 170561566081 + 218462760000 = 412991^2 + 467400^2 .

It is a cyclic number.

It is not a de Polignac number, because 389024326081 - 2³ = 389024326073 is a prime.

It is a super-2 number, since 2×389024326081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389024326681) 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, 152318350 + ... + 152320903.

It is an arithmetic number, because the mean of its divisors is an integer number (97332241653).

Almost surely, 2^389024326081 is an apocalyptic number.

It is an amenable number.

389024326081 is a deficient number, since it is larger than the sum of its proper divisors (304640531).

389024326081 is a wasteful number, since it uses less digits than its factorization.

389024326081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304640530.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 389024326081 in words is "three hundred eighty-nine billion, twenty-four million, three hundred twenty-six thousand, eighty-one".