4819891520 has 42 divisors (see below), whose sum is σ = 11480324766. Its totient is φ = 1927459840.

The previous prime is 4819891513. The next prime is 4819891537. The reversal of 4819891520 is 251989184.

It can be written as a sum of positive squares in 3 ways, for example, as 925133056 + 3894758464 = 30416^2 + 62408^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1239980 + ... + 1243860.

Almost surely, 2^4819891520 is an apocalyptic number.

4819891520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4819891520 is an abundant number, since it is smaller than the sum of its proper divisors (6660433246).

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

4819891520 is an frugal number, since it uses more digits than its factorization.

4819891520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7779 (or 3888 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 47.

The square root of 4819891520 is about 69425.4385654135. The cubic root of 4819891520 is about 1689.1922800089.

The spelling of 4819891520 in words is "four billion, eight hundred nineteen million, eight hundred ninety-one thousand, five hundred twenty".