396397386180 has 144 divisors (see below), whose sum is σ = 1228494968064. Its totient is φ = 103414241280.

The previous prime is 396397386169. The next prime is 396397386191. The reversal of 396397386180 is 81683793693.

396397386180 is a `hidden beast` number, since 3 + 9 + 6 + 3 + 9 + 7 + 3 + 8 + 618 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (396397386169) and next prime (396397386191).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

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, 24043540 + ... + 24060020.

It is an arithmetic number, because the mean of its divisors is an integer number (8531215056).

Almost surely, 2^396397386180 is an apocalyptic number.

396397386180 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 396397386180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614247484032).

396397386180 is an abundant number, since it is smaller than the sum of its proper divisors (832097581884).

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

396397386180 is a wasteful number, since it uses less digits than its factorization.

396397386180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19386 (or 19381 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 63.

The spelling of 396397386180 in words is "three hundred ninety-six billion, three hundred ninety-seven million, three hundred eighty-six thousand, one hundred eighty".