389644214538 has 32 divisors (see below), whose sum is σ = 861004100736. Its totient is φ = 116926481408.

The previous prime is 389644214537. The next prime is 389644214569. The reversal of 389644214538 is 835412446983.

It is a super-2 number, since 2×389644214538² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (389644214537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83042031 + ... + 83046722.

It is an arithmetic number, because the mean of its divisors is an integer number (26906378148).

Almost surely, 2^389644214538 is an apocalyptic number.

389644214538 is an abundant number, since it is smaller than the sum of its proper divisors (471359886198).

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

389644214538 is a wasteful number, since it uses less digits than its factorization.

389644214538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166088798.

The product of its digits is 19906560, while the sum is 57.

The spelling of 389644214538 in words is "three hundred eighty-nine billion, six hundred forty-four million, two hundred fourteen thousand, five hundred thirty-eight".