4640641620 has 48 divisors (see below), whose sum is σ = 12997904640. Its totient is φ = 1237113216.

The previous prime is 4640641613. The next prime is 4640641631. The reversal of 4640641620 is 261460464.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213621 + ... + 234339.

It is an arithmetic number, because the mean of its divisors is an integer number (270789680).

Almost surely, 2^4640641620 is an apocalyptic number.

It is an amenable number.

4640641620 is an abundant number, since it is smaller than the sum of its proper divisors (8357263020).

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

4640641620 is a wasteful number, since it uses less digits than its factorization.

4640641620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24464 (or 24462 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 4640641620 is about 68122.2549538695. The cubic root of 4640641620 is about 1667.9870591730.

The spelling of 4640641620 in words is "four billion, six hundred forty million, six hundred forty-one thousand, six hundred twenty".