3000000000 has 200 divisors, whose sum is σ = 9990233352. Its totient is φ = 800000000.

The previous prime is 2999999929. The next prime is 3000000019. The reversal of 3000000000 is 3.

It is a tau number, because it is divible by the number of its divisors (200).

It is an ABA number since it can be written as A⋅B^A, here for A=3, B=1000.

It is a Harshad number since it is a multiple of its sum of digits (3).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 599999998 + ... + 600000002.

Almost surely, 2^3000000000 is an apocalyptic number.

3000000000 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 3000000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4995116676).

3000000000 is an abundant number, since it is smaller than the sum of its proper divisors (6990233352).

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

3000000000 is an frugal number, since it uses more digits than its factorization.

3000000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 3.

The square root of 3000000000 is about 54772.2557505166. The cubic root of 3000000000 is about 1442.2495703074.

The spelling of 3000000000 in words is "three billion", and thus it is an aban number and an uban number.