1002045000 has 160 divisors (see below), whose sum is σ = 3415531680. Its totient is φ = 242880000.

The previous prime is 1002044903. The next prime is 1002045001. The reversal of 1002045000 is 5402001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002045001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 161964 + ... + 168036.

It is an arithmetic number, because the mean of its divisors is an integer number (21347073).

Almost surely, 2^1002045000 is an apocalyptic number.

1002045000 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 1002045000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1707765840).

1002045000 is an abundant number, since it is smaller than the sum of its proper divisors (2413486680).

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

1002045000 is a wasteful number, since it uses less digits than its factorization.

1002045000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6113 (or 6094 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 1002045000 is about 31655.0943767350. The cubic root of 1002045000 is about 1000.6812025244.

Adding to 1002045000 its reverse (5402001), we get a palindrome (1007447001).

The spelling of 1002045000 in words is "one billion, two million, forty-five thousand".