3636981504 has 216 divisors, whose sum is σ = 11660218752. Its totient is φ = 1082695680.

The previous prime is 3636981499. The next prime is 3636981521. The reversal of 3636981504 is 4051896363.

3636981504 is a `hidden beast` number, since 3 + 6 + 3 + 69 + 81 + 504 = 666.

3636981504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3636981504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 926554 + ... + 930470.

Almost surely, 2^3636981504 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 3636981504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5830109376).

3636981504 is an abundant number, since it is smaller than the sum of its proper divisors (8023237248).

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

3636981504 is a wasteful number, since it uses less digits than its factorization.

3636981504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3983 (or 3966 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 3636981504 is about 60307.3917857504. The cubic root of 3636981504 is about 1537.8490102794.

The spelling of 3636981504 in words is "three billion, six hundred thirty-six million, nine hundred eighty-one thousand, five hundred four".