3685744944 has 200 divisors, whose sum is σ = 12833821440. Its totient is φ = 997598592.

The previous prime is 3685744903. The next prime is 3685744967. The reversal of 3685744944 is 4494475863.

3685744944 is a `hidden beast` number, since 3 + 6 + 85 + 74 + 494 + 4 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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 39 ways as a sum of consecutive naturals, for example, 161677 + ... + 183059.

Almost surely, 2^3685744944 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 3685744944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6416910720).

3685744944 is an abundant number, since it is smaller than the sum of its proper divisors (9148076496).

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

3685744944 is a wasteful number, since it uses less digits than its factorization.

3685744944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21429 (or 21414 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 54.

The square root of 3685744944 is about 60710.3363851659. The cubic root of 3685744944 is about 1544.6915097152.

The spelling of 3685744944 in words is "three billion, six hundred eighty-five million, seven hundred forty-four thousand, nine hundred forty-four".