389199649680 has 320 divisors, whose sum is σ = 1424011000320. Its totient is φ = 97366523904.

The previous prime is 389199649661. The next prime is 389199649757. The reversal of 389199649680 is 86946991983.

389199649680 is a `hidden beast` number, since 38 + 9 + 19 + 96 + 496 + 8 + 0 = 666.

It is a super-2 number, since 2×389199649680² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 389199649599 and 389199649608.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11476429 + ... + 11510291.

It is an arithmetic number, because the mean of its divisors is an integer number (4450034376).

Almost surely, 2^389199649680 is an apocalyptic number.

389199649680 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 389199649680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (712005500160).

389199649680 is an abundant number, since it is smaller than the sum of its proper divisors (1034811350640).

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

389199649680 is a wasteful number, since it uses less digits than its factorization.

389199649680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34215 (or 34203 counting only the distinct ones).

The product of its (nonzero) digits is 181398528, while the sum is 72.

The spelling of 389199649680 in words is "three hundred eighty-nine billion, one hundred ninety-nine million, six hundred forty-nine thousand, six hundred eighty".