389978160 has 240 divisors, whose sum is σ = 1432429152. Its totient is φ = 87183360.

The previous prime is 389978159. The next prime is 389978201. The reversal of 389978160 is 61879983.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 377004 + ... + 378036.

Almost surely, 2^389978160 is an apocalyptic number.

389978160 is a gapful number since it is divisible by the number (30) 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 389978160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (716214576).

389978160 is an abundant number, since it is smaller than the sum of its proper divisors (1042450992).

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

389978160 is a wasteful number, since it uses less digits than its factorization.

389978160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 389978160 is about 19747.8646946955. The cubic root of 389978160 is about 730.6007190170.

The spelling of 389978160 in words is "three hundred eighty-nine million, nine hundred seventy-eight thousand, one hundred sixty".