389148564 has 96 divisors (see below), whose sum is σ = 1136782080. Its totient is φ = 101025792.

The previous prime is 389148533. The next prime is 389148583. The reversal of 389148564 is 465841983.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 36714 + ... + 46110.

It is an arithmetic number, because the mean of its divisors is an integer number (11841480).

Almost surely, 2^389148564 is an apocalyptic number.

389148564 is a gapful number since it is divisible by the number (34) 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 389148564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (568391040).

389148564 is an abundant number, since it is smaller than the sum of its proper divisors (747633516).

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

389148564 is a wasteful number, since it uses less digits than its factorization.

389148564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9457 (or 9455 counting only the distinct ones).

The product of its digits is 829440, while the sum is 48.

The square root of 389148564 is about 19726.8488106945. The cubic root of 389148564 is about 730.0822850887.

The spelling of 389148564 in words is "three hundred eighty-nine million, one hundred forty-eight thousand, five hundred sixty-four".