389854359553 has 2 divisors, whose sum is σ = 389854359554. Its totient is φ = 389854359552.

The previous prime is 389854359551. The next prime is 389854359599. The reversal of 389854359553 is 355953458983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 389840394384 + 13965169 = 624372^2 + 3737^2 .

It is an emirp because it is prime and its reverse (355953458983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389854359553 - 2¹ = 389854359551 is a prime.

Together with 389854359551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (389854359551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194927179776 + 194927179777.

It is an arithmetic number, because the mean of its divisors is an integer number (194927179777).

Almost surely, 2^389854359553 is an apocalyptic number.

It is an amenable number.

389854359553 is a deficient number, since it is larger than the sum of its proper divisors (1).

389854359553 is an equidigital number, since it uses as much as digits as its factorization.

389854359553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920000, while the sum is 67.

The spelling of 389854359553 in words is "three hundred eighty-nine billion, eight hundred fifty-four million, three hundred fifty-nine thousand, five hundred fifty-three".