3897844930980 has 1152 divisors, whose sum is σ = 17046367543296. Its totient is φ = 693710438400.

The previous prime is 3897844930913. The next prime is 3897844930981. The reversal of 3897844930980 is 890394487983.

3897844930980 is a `hidden beast` number, since 3 + 8 + 9 + 78 + 449 + 30 + 9 + 80 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 3897844930899 and 3897844930908.

It is not an unprimeable number, because it can be changed into a prime (3897844930981) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 217468299 + ... + 217486221.

It is an arithmetic number, because the mean of its divisors is an integer number (14797194048).

Almost surely, 2^{3897844930980} is an apocalyptic number.

3897844930980 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 3897844930980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8523183771648).

3897844930980 is an abundant number, since it is smaller than the sum of its proper divisors (13148522612316).

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

3897844930980 is a wasteful number, since it uses less digits than its factorization.

3897844930980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18057 (or 18052 counting only the distinct ones).

The product of its (nonzero) digits is 376233984, while the sum is 72.

The spelling of 3897844930980 in words is "three trillion, eight hundred ninety-seven billion, eight hundred forty-four million, nine hundred thirty thousand, nine hundred eighty".