4521438020 has 48 divisors (see below), whose sum is σ = 10411970688. Its totient is φ = 1635624960.

The previous prime is 4521437981. The next prime is 4521438041. The reversal of 4521438020 is 208341254.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10784 + ... + 95703.

It is an arithmetic number, because the mean of its divisors is an integer number (216916056).

Almost surely, 2^4521438020 is an apocalyptic number.

It is an amenable number.

4521438020 is an abundant number, since it is smaller than the sum of its proper divisors (5890532668).

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

4521438020 is a wasteful number, since it uses less digits than its factorization.

4521438020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106700 (or 106698 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 4521438020 is about 67241.6390341580. The cubic root of 4521438020 is about 1653.5812047975.

Adding to 4521438020 its reverse (208341254), we get a palindrome (4729779274).

The spelling of 4521438020 in words is "four billion, five hundred twenty-one million, four hundred thirty-eight thousand, twenty".