4915815820 has 24 divisors (see below), whose sum is σ = 10340646624. Its totient is φ = 1963005696.

The previous prime is 4915815811. The next prime is 4915815871. The reversal of 4915815820 is 285185194.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195384 + ... + 219103.

It is an arithmetic number, because the mean of its divisors is an integer number (430860276).

Almost surely, 2^4915815820 is an apocalyptic number.

It is an amenable number.

4915815820 is an abundant number, since it is smaller than the sum of its proper divisors (5424830804).

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

4915815820 is a wasteful number, since it uses less digits than its factorization.

4915815820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415089 (or 415087 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 43.

The square root of 4915815820 is about 70112.8791307275. The cubic root of 4915815820 is about 1700.3247153658.

The spelling of 4915815820 in words is "four billion, nine hundred fifteen million, eight hundred fifteen thousand, eight hundred twenty".