4536409840 has 20 divisors (see below), whose sum is σ = 10547153064. Its totient is φ = 1814563904.

The previous prime is 4536409837. The next prime is 4536409861. The reversal of 4536409840 is 489046354.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28352482 + ... + 28352641.

Almost surely, 2^4536409840 is an apocalyptic number.

4536409840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4536409840 is an abundant number, since it is smaller than the sum of its proper divisors (6010743224).

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

4536409840 is a wasteful number, since it uses less digits than its factorization.

4536409840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56705136 (or 56705130 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The square root of 4536409840 is about 67352.8755139675. The cubic root of 4536409840 is about 1655.4043595955.

The spelling of 4536409840 in words is "four billion, five hundred thirty-six million, four hundred nine thousand, eight hundred forty".