4050045000 has 120 divisors (see below), whose sum is σ = 13706854590. Its totient is φ = 1080000000.

The previous prime is 4050044987. The next prime is 4050045001. The reversal of 4050045000 is 5400504.

It is a happy number.

4050045000 is a nontrivial binomial coefficient, being equal to C(90001, 2).

It can be written as a sum of positive squares in 5 ways, for example, as 925011396 + 3125033604 = 30414^2 + 55902^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (4050045001) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1 + ... + 90000.

Almost surely, 2^4050045000 is an apocalyptic number.

4050045000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

4050045000 is the 90000-th triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4050045000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6853427295).

4050045000 is an abundant number, since it is smaller than the sum of its proper divisors (9656809590).

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

4050045000 is a wasteful number, since it uses less digits than its factorization.

4050045000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90033 (or 90011 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 4050045000 is about 63639.9638591978. The cubic root of 4050045000 is about 1593.9937574108.

Adding to 4050045000 its reverse (5400504), we get a palindrome (4055445504).

The spelling of 4050045000 in words is "four billion, fifty million, forty-five thousand".