4649351820 has 24 divisors (see below), whose sum is σ = 13018185264. Its totient is φ = 1239827136.

The previous prime is 4649351797. The next prime is 4649351827. The reversal of 4649351820 is 281539464.

It is a super-2 number, since 2×4649351820² = 43232944692274624800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4649351827) 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 7 ways as a sum of consecutive naturals, for example, 38744539 + ... + 38744658.

It is an arithmetic number, because the mean of its divisors is an integer number (542424386).

Almost surely, 2^4649351820 is an apocalyptic number.

It is an amenable number.

4649351820 is an abundant number, since it is smaller than the sum of its proper divisors (8368833444).

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

4649351820 is a wasteful number, since it uses less digits than its factorization.

4649351820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77489209 (or 77489207 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 4649351820 is about 68186.1556329436. The cubic root of 4649351820 is about 1669.0299767863.

The spelling of 4649351820 in words is "four billion, six hundred forty-nine million, three hundred fifty-one thousand, eight hundred twenty".