3998312180 has 48 divisors (see below), whose sum is σ = 8793429120. Its totient is φ = 1524217728.

The previous prime is 3998312159. The next prime is 3998312207. The reversal of 3998312180 is 812138993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111731 + ... + 143109.

It is an arithmetic number, because the mean of its divisors is an integer number (183196440).

Almost surely, 2^3998312180 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 3998312180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4396714560).

3998312180 is an abundant number, since it is smaller than the sum of its proper divisors (4795116940).

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

3998312180 is a wasteful number, since it uses less digits than its factorization.

3998312180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31688 (or 31686 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 3998312180 is about 63232.2084067922. The cubic root of 3998312180 is about 1587.1777499538.

The spelling of 3998312180 in words is "three billion, nine hundred ninety-eight million, three hundred twelve thousand, one hundred eighty".