4919661620 has 48 divisors (see below), whose sum is σ = 10945585728. Its totient is φ = 1850995200.

The previous prime is 4919661601. The next prime is 4919661641. The reversal of 4919661620 is 261669194.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

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, 759395 + ... + 765845.

It is an arithmetic number, because the mean of its divisors is an integer number (228033036).

Almost surely, 2^4919661620 is an apocalyptic number.

It is an amenable number.

4919661620 is an abundant number, since it is smaller than the sum of its proper divisors (6025924108).

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

4919661620 is a wasteful number, since it uses less digits than its factorization.

4919661620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8720 (or 8718 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 4919661620 is about 70140.2995431300. The cubic root of 4919661620 is about 1700.7680059283.

The spelling of 4919661620 in words is "four billion, nine hundred nineteen million, six hundred sixty-one thousand, six hundred twenty".