4876821820 has 24 divisors (see below), whose sum is σ = 11029120704. Its totient is φ = 1800672576.

The previous prime is 4876821809. The next prime is 4876821847. The reversal of 4876821820 is 281286784.

It is a happy number.

It is a super-2 number, since 2×4876821820² = 47566782128056224800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 9378244 + ... + 9378763.

It is an arithmetic number, because the mean of its divisors is an integer number (459546696).

Almost surely, 2^4876821820 is an apocalyptic number.

It is an amenable number.

4876821820 is an abundant number, since it is smaller than the sum of its proper divisors (6152298884).

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

4876821820 is a wasteful number, since it uses less digits than its factorization.

4876821820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18757029 (or 18757027 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 46.

The square root of 4876821820 is about 69834.2453241961. The cubic root of 4876821820 is about 1695.8169149219.

The spelling of 4876821820 in words is "four billion, eight hundred seventy-six million, eight hundred twenty-one thousand, eight hundred twenty".