3936786624 has 196 divisors, whose sum is σ = 12331969240. Its totient is φ = 1242915840.

The previous prime is 3936786619. The next prime is 3936786631. The reversal of 3936786624 is 4266876393.

3936786624 is a `hidden beast` number, since 3 + 9 + 3 + 6 + 7 + 8 + 6 + 624 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 884244 + ... + 888684.

Almost surely, 2^3936786624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3936786624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6165984620).

3936786624 is an abundant number, since it is smaller than the sum of its proper divisors (8395182616).

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

3936786624 is an equidigital number, since it uses as much as digits as its factorization.

3936786624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4490 (or 4465 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 54.

The square root of 3936786624 is about 62743.8174165391. The cubic root of 3936786624 is about 1578.9945298587.

The spelling of 3936786624 in words is "three billion, nine hundred thirty-six million, seven hundred eighty-six thousand, six hundred twenty-four".