389898818995920 has 640 divisors, whose sum is σ = 1362659664199680. Its totient is φ = 91505059430400.

The previous prime is 389898818995919. The next prime is 389898818995937. The reversal of 389898818995920 is 29599818898983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 36259533264 + ... + 36259544016.

It is an arithmetic number, because the mean of its divisors is an integer number (2129155725312).

Almost surely, 2^{389898818995920} is an apocalyptic number.

389898818995920 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 389898818995920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (681329832099840).

389898818995920 is an abundant number, since it is smaller than the sum of its proper divisors (972760845203760).

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

389898818995920 is a wasteful number, since it uses less digits than its factorization.

389898818995920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12395 (or 12389 counting only the distinct ones).

The product of its (nonzero) digits is 58047528960, while the sum is 96.

The spelling of 389898818995920 in words is "three hundred eighty-nine trillion, eight hundred ninety-eight billion, eight hundred eighteen million, nine hundred ninety-five thousand, nine hundred twenty".