3634772816 has 40 divisors (see below), whose sum is σ = 7351315200. Its totient is φ = 1738978560.

The previous prime is 3634772809. The next prime is 3634772819. The reversal of 3634772816 is 6182774363.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3634772819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2975 + ... + 85313.

It is an arithmetic number, because the mean of its divisors is an integer number (183782880).

Almost surely, 2^3634772816 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 3634772816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3675657600).

3634772816 is an abundant number, since it is smaller than the sum of its proper divisors (3716542384).

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

3634772816 is a wasteful number, since it uses less digits than its factorization.

3634772816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82467 (or 82461 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 47.

The square root of 3634772816 is about 60289.0770869815. The cubic root of 3634772816 is about 1537.5376425093.

The spelling of 3634772816 in words is "three billion, six hundred thirty-four million, seven hundred seventy-two thousand, eight hundred sixteen".