389198309664 has 24 divisors (see below), whose sum is σ = 1021645563120. Its totient is φ = 129732769856.

The previous prime is 389198309657. The next prime is 389198309681. The reversal of 389198309664 is 466903891983.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 389198309595 and 389198309604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2027074434 + ... + 2027074625.

It is an arithmetic number, because the mean of its divisors is an integer number (42568565130).

Almost surely, 2^389198309664 is an apocalyptic number.

It is an amenable number.

389198309664 is an abundant number, since it is smaller than the sum of its proper divisors (632447253456).

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

389198309664 is a wasteful number, since it uses less digits than its factorization.

389198309664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054149072 (or 4054149064 counting only the distinct ones).

The product of its (nonzero) digits is 60466176, while the sum is 66.

The spelling of 389198309664 in words is "three hundred eighty-nine billion, one hundred ninety-eight million, three hundred nine thousand, six hundred sixty-four".