4519950021 has 12 divisors (see below), whose sum is σ = 6912864972. Its totient is φ = 2836046976.

The previous prime is 4519950011. The next prime is 4519950037. The reversal of 4519950021 is 1200599154.

4519950021 is a `hidden beast` number, since 45 + 1 + 99 + 500 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2651117121 + 1868832900 = 51489^2 + 43230^2 .

It is not a de Polignac number, because 4519950021 - 2⁵ = 4519949989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4519950011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14770926 + ... + 14771231.

It is an arithmetic number, because the mean of its divisors is an integer number (576072081).

Almost surely, 2^4519950021 is an apocalyptic number.

It is an amenable number.

4519950021 is a deficient number, since it is larger than the sum of its proper divisors (2392914951).

4519950021 is a wasteful number, since it uses less digits than its factorization.

4519950021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29542180 (or 29542177 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 4519950021 is about 67230.5735584637. The cubic root of 4519950021 is about 1653.3997877987.

The spelling of 4519950021 in words is "four billion, five hundred nineteen million, nine hundred fifty thousand, twenty-one".