4521872145 has 24 divisors (see below), whose sum is σ = 8416220544. Its totient is φ = 2067141216.

The previous prime is 4521872137. The next prime is 4521872167. The reversal of 4521872145 is 5412781254.

It is not a de Polignac number, because 4521872145 - 2³ = 4521872137 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3075369 + ... + 3076838.

It is an arithmetic number, because the mean of its divisors is an integer number (350675856).

Almost surely, 2^4521872145 is an apocalyptic number.

It is an amenable number.

4521872145 is a deficient number, since it is larger than the sum of its proper divisors (3894348399).

4521872145 is a wasteful number, since it uses less digits than its factorization.

4521872145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6152229 (or 6152222 counting only the distinct ones).

The product of its digits is 89600, while the sum is 39.

The square root of 4521872145 is about 67244.8670531811. The cubic root of 4521872145 is about 1653.6341258640.

The spelling of 4521872145 in words is "four billion, five hundred twenty-one million, eight hundred seventy-two thousand, one hundred forty-five".