3746785644 has 36 divisors (see below), whose sum is σ = 10824048144. Its totient is φ = 1070510112.

The previous prime is 3746785639. The next prime is 3746785661. The reversal of 3746785644 is 4465876473.

3746785644 is a `hidden beast` number, since 3 + 7 + 4 + 6 + 78 + 564 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7433847 + ... + 7434350.

It is an arithmetic number, because the mean of its divisors is an integer number (300668004).

Almost surely, 2^3746785644 is an apocalyptic number.

It is an amenable number.

3746785644 is an abundant number, since it is smaller than the sum of its proper divisors (7077262500).

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

3746785644 is a wasteful number, since it uses less digits than its factorization.

3746785644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14868214 (or 14868209 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 54.

The square root of 3746785644 is about 61210.9928362545. The cubic root of 3746785644 is about 1553.1722260207.

The spelling of 3746785644 in words is "three billion, seven hundred forty-six million, seven hundred eighty-five thousand, six hundred forty-four".