3817986320 has 20 divisors (see below), whose sum is σ = 8876818380. Its totient is φ = 1527194496.

The previous prime is 3817986317. The next prime is 3817986343. The reversal of 3817986320 is 236897183.

It can be written as a sum of positive squares in 2 ways, for example, as 2174170384 + 1643815936 = 46628^2 + 40544^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23862335 + ... + 23862494.

It is an arithmetic number, because the mean of its divisors is an integer number (443840919).

Almost surely, 2^3817986320 is an apocalyptic number.

It is an amenable number.

3817986320 is an abundant number, since it is smaller than the sum of its proper divisors (5058832060).

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

3817986320 is a wasteful number, since it uses less digits than its factorization.

3817986320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47724842 (or 47724836 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 3817986320 is about 61789.8561254192. The cubic root of 3817986320 is about 1562.9489365568.

The spelling of 3817986320 in words is "three billion, eight hundred seventeen million, nine hundred eighty-six thousand, three hundred twenty".