4521919872 has 32 divisors (see below), whose sum is σ = 12011350680. Its totient is φ = 1507306496.

The previous prime is 4521919841. The next prime is 4521919901. The reversal of 4521919872 is 2789191254.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5887533 + ... + 5888300.

Almost surely, 2^4521919872 is an apocalyptic number.

It is an amenable number.

4521919872 is an abundant number, since it is smaller than the sum of its proper divisors (7489430808).

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

4521919872 is a wasteful number, since it uses less digits than its factorization.

4521919872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11775850 (or 11775838 counting only the distinct ones).

The product of its digits is 362880, while the sum is 48.

The square root of 4521919872 is about 67245.2219269146. The cubic root of 4521919872 is about 1653.6399437137.

The spelling of 4521919872 in words is "four billion, five hundred twenty-one million, nine hundred nineteen thousand, eight hundred seventy-two".