389538401280 has 704 divisors, whose sum is σ = 1547445534720. Its totient is φ = 81616896000.

The previous prime is 389538401243. The next prime is 389538401293. The reversal of 389538401280 is 82104835983.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 63326205 + ... + 63332355.

Almost surely, 2^389538401280 is an apocalyptic number.

389538401280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389538401280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (773722767360).

389538401280 is an abundant number, since it is smaller than the sum of its proper divisors (1157907133440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389538401280 is a wasteful number, since it uses less digits than its factorization.

389538401280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6236 (or 6218 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 389538401280 in words is "three hundred eighty-nine billion, five hundred thirty-eight million, four hundred one thousand, two hundred eighty".