4538921550 has 96 divisors (see below), whose sum is σ = 11495558880. Its totient is φ = 1184870400.

The previous prime is 4538921521. The next prime is 4538921561. The reversal of 4538921550 is 551298354.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2130886 + ... + 2133014.

It is an arithmetic number, because the mean of its divisors is an integer number (119745405).

Almost surely, 2^4538921550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4538921550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5747779440).

4538921550 is an abundant number, since it is smaller than the sum of its proper divisors (6956637330).

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

4538921550 is a wasteful number, since it uses less digits than its factorization.

4538921550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438 (or 2433 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The square root of 4538921550 is about 67371.5188339999. The cubic root of 4538921550 is about 1655.7098235114.

The spelling of 4538921550 in words is "four billion, five hundred thirty-eight million, nine hundred twenty-one thousand, five hundred fifty".