2981315988 has 72 divisors (see below), whose sum is σ = 8626800000. Its totient is φ = 850409280.

The previous prime is 2981315957. The next prime is 2981316001. The reversal of 2981315988 is 8895131892.

It is a super-2 number, since 2×2981315988² = 17776490040608832288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149638 + ... + 168386.

Almost surely, 2^2981315988 is an apocalyptic number.

2981315988 is a gapful number since it is divisible by the number (28) 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 2981315988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4313400000).

2981315988 is an abundant number, since it is smaller than the sum of its proper divisors (5645484012).

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

2981315988 is a wasteful number, since it uses less digits than its factorization.

2981315988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19397 (or 19392 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 54.

The square root of 2981315988 is about 54601.4284428530. The cubic root of 2981315988 is about 1439.2492208996.

The spelling of 2981315988 in words is "two billion, nine hundred eighty-one million, three hundred fifteen thousand, nine hundred eighty-eight".