397180581948 has 96 divisors (see below), whose sum is σ = 1090607918400. Its totient is φ = 124570441728.

The previous prime is 397180581943. The next prime is 397180581949. The reversal of 397180581948 is 849185081793.

397180581948 is a `hidden beast` number, since 3 + 9 + 7 + 1 + 8 + 0 + 581 + 9 + 48 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397180581943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6891186 + ... + 6948582.

It is an arithmetic number, because the mean of its divisors is an integer number (11360499150).

Almost surely, 2^397180581948 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397180581948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (545303959200).

397180581948 is an abundant number, since it is smaller than the sum of its proper divisors (693427336452).

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

397180581948 is a wasteful number, since it uses less digits than its factorization.

397180581948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61196 (or 61188 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 63.

The spelling of 397180581948 in words is "three hundred ninety-seven billion, one hundred eighty million, five hundred eighty-one thousand, nine hundred forty-eight".