3868718420 has 24 divisors (see below), whose sum is σ = 9284924544. Its totient is φ = 1326417696.

The previous prime is 3868718317. The next prime is 3868718449. The reversal of 3868718420 is 248178683.

It is a Smith number, since the sum of its digits (47) 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13816712 + ... + 13816991.

It is an arithmetic number, because the mean of its divisors is an integer number (386871856).

Almost surely, 2^3868718420 is an apocalyptic number.

It is an amenable number.

3868718420 is an abundant number, since it is smaller than the sum of its proper divisors (5416206124).

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

3868718420 is a wasteful number, since it uses less digits than its factorization.

3868718420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27633719 (or 27633717 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 3868718420 is about 62199.0226611319. The cubic root of 3868718420 is about 1569.8411431356.

The spelling of 3868718420 in words is "three billion, eight hundred sixty-eight million, seven hundred eighteen thousand, four hundred twenty".