1002010000 has 100 divisors (see below), whose sum is σ = 2453349052. Its totient is φ = 396288000.

The previous prime is 1002009989. The next prime is 1002010003. The reversal of 1002010000 is 102001.

It can be written as a sum of positive squares in 10 ways, for example, as 511121664 + 490888336 = 22608^2 + 22156^2 .

It is a tau number, because it is divible by the number of its divisors (100).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002010003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 969484 + ... + 970516.

Almost surely, 2^1002010000 is an apocalyptic number.

1002010000 is a gapful number since it is divisible by the number (10) 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 1002010000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1226674526).

1002010000 is an abundant number, since it is smaller than the sum of its proper divisors (1451339052).

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

1002010000 is an equidigital number, since it uses as much as digits as its factorization.

1002010000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 1002010000 is about 31654.5415383006. The cubic root of 1002010000 is about 1000.6695516006.

Adding to 1002010000 its reverse (102001), we get a palindrome (1002112001).

The spelling of 1002010000 in words is "one billion, two million, ten thousand".