3845568636 has 360 divisors, whose sum is σ = 12697681920. Its totient is φ = 993492864.

The previous prime is 3845568613. The next prime is 3845568667. The reversal of 3845568636 is 6368655483.

It is a happy number.

3845568636 is a `hidden beast` number, since 3 + 8 + 4 + 556 + 86 + 3 + 6 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 30280005 + ... + 30280131.

Almost surely, 2^3845568636 is an apocalyptic number.

3845568636 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3845568636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6348840960).

3845568636 is an abundant number, since it is smaller than the sum of its proper divisors (8852113284).

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

3845568636 is a wasteful number, since it uses less digits than its factorization.

3845568636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 231 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 54.

The square root of 3845568636 is about 62012.6490000226. The cubic root of 3845568636 is about 1566.7036517198.

The spelling of 3845568636 in words is "three billion, eight hundred forty-five million, five hundred sixty-eight thousand, six hundred thirty-six".