4519265021 has 4 divisors (see below), whose sum is σ = 4519714044. Its totient is φ = 4518816000.

The previous prime is 4519265011. The next prime is 4519265027. The reversal of 4519265021 is 1205629154.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3892012996 + 627252025 = 62386^2 + 25045^2 .

It is a cyclic number.

It is not a de Polignac number, because 4519265021 - 2¹⁴ = 4519248637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4519265027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209060 + ... + 229661.

It is an arithmetic number, because the mean of its divisors is an integer number (1129928511).

Almost surely, 2^4519265021 is an apocalyptic number.

It is an amenable number.

4519265021 is a deficient number, since it is larger than the sum of its proper divisors (449023).

4519265021 is a wasteful number, since it uses less digits than its factorization.

4519265021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449022.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 4519265021 is about 67225.4789570145. The cubic root of 4519265021 is about 1653.3162591410.

The spelling of 4519265021 in words is "four billion, five hundred nineteen million, two hundred sixty-five thousand, twenty-one".