3000001000 has 64 divisors (see below), whose sum is σ = 7030230480. Its totient is φ = 1198252800.

The previous prime is 3000000973. The next prime is 3000001003. The reversal of 3000001000 is 1000003.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 118243876 + 2881757124 = 10874^2 + 53682^2 .

It is a Harshad number since it is a multiple of its sum of digits (4).

It is not an unprimeable number, because it can be changed into a prime (3000001003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 851242 + ... + 854758.

Almost surely, 2^3000001000 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 3000001000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3515115240).

3000001000 is an abundant number, since it is smaller than the sum of its proper divisors (4030229480).

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

3000001000 is a wasteful number, since it uses less digits than its factorization.

3000001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391 (or 4377 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 4.

The square root of 3000001000 is about 54772.2648792251. The cubic root of 3000001000 is about 1442.2497305573.

Adding to 3000001000 its reverse (1000003), we get a palindrome (3001001003).

The spelling of 3000001000 in words is "three billion, one thousand".