389538401281 has 8 divisors (see below), whose sum is σ = 394518337920. Its totient is φ = 384559691568.

The previous prime is 389538401243. The next prime is 389538401293. The reversal of 389538401281 is 182104835983.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389538401281 is a prime.

It is a super-2 number, since 2×389538401281² (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 (389538401201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340995 + ... + 946231.

It is an arithmetic number, because the mean of its divisors is an integer number (49314792240).

Almost surely, 2^389538401281 is an apocalyptic number.

It is an amenable number.

389538401281 is a deficient number, since it is larger than the sum of its proper divisors (4979936639).

389538401281 is an equidigital number, since it uses as much as digits as its factorization.

389538401281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613463.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 389538401281 in words is "three hundred eighty-nine billion, five hundred thirty-eight million, four hundred one thousand, two hundred eighty-one".