3978544508 has 12 divisors (see below), whose sum is σ = 7265168400. Its totient is φ = 1902782112.

The previous prime is 3978544499. The next prime is 3978544519. The reversal of 3978544508 is 8054458793.

It is a self number, because there is not a number n which added to its sum of digits gives 3978544508.

It is a congruent number.

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, 21622433 + ... + 21622616.

It is an arithmetic number, because the mean of its divisors is an integer number (605430700).

Almost surely, 2^3978544508 is an apocalyptic number.

It is an amenable number.

3978544508 is a deficient number, since it is larger than the sum of its proper divisors (3286623892).

3978544508 is a wasteful number, since it uses less digits than its factorization.

3978544508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43245076 (or 43245074 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 53.

The square root of 3978544508 is about 63075.7045779118. The cubic root of 3978544508 is about 1584.5577563191.

The spelling of 3978544508 in words is "three billion, nine hundred seventy-eight million, five hundred forty-four thousand, five hundred eight".