4519919868 has 36 divisors (see below), whose sum is σ = 10810033080. Its totient is φ = 1469886080.

The previous prime is 4519919809. The next prime is 4519919881. The reversal of 4519919868 is 8689199154.

It is a super-2 number, since 2×4519919868² = 40859351226282274848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91863 + ... + 132206.

Almost surely, 2^4519919868 is an apocalyptic number.

It is an amenable number.

4519919868 is an abundant number, since it is smaller than the sum of its proper divisors (6290113212).

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

4519919868 is a wasteful number, since it uses less digits than its factorization.

4519919868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224158 (or 224115 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 60.

The square root of 4519919868 is about 67230.3493074370. The cubic root of 4519919868 is about 1653.3961111301.

The spelling of 4519919868 in words is "four billion, five hundred nineteen million, nine hundred nineteen thousand, eight hundred sixty-eight".