389752887041281 has 32 divisors (see below), whose sum is σ = 441189467566848. Its totient is φ = 342287321671680.

The previous prime is 389752887041233. The next prime is 389752887041333. The reversal of 389752887041281 is 182140788257983.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389752887041281 is a prime.

It is a super-2 number, since 2×389752887041281² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (389752887041381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1143100 + ... + 27943021.

It is an arithmetic number, because the mean of its divisors is an integer number (13787170861464).

Almost surely, 2^{389752887041281} is an apocalyptic number.

It is an amenable number.

389752887041281 is a deficient number, since it is larger than the sum of its proper divisors (51436580525567).

389752887041281 is a wasteful number, since it uses less digits than its factorization.

389752887041281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29087001.

The product of its (nonzero) digits is 433520640, while the sum is 73.

The spelling of 389752887041281 in words is "three hundred eighty-nine trillion, seven hundred fifty-two billion, eight hundred eighty-seven million, forty-one thousand, two hundred eighty-one".