3785813812 has 12 divisors (see below), whose sum is σ = 7227462816. Its totient is φ = 1720824440.

The previous prime is 3785813789. The next prime is 3785813819. The reversal of 3785813812 is 2183185873.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3785813819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43020568 + ... + 43020655.

It is an arithmetic number, because the mean of its divisors is an integer number (602288568).

Almost surely, 2^3785813812 is an apocalyptic number.

It is an amenable number.

3785813812 is a deficient number, since it is larger than the sum of its proper divisors (3441649004).

3785813812 is a wasteful number, since it uses less digits than its factorization.

3785813812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86041238 (or 86041236 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 3785813812 is about 61528.9672593324. The cubic root of 3785813812 is about 1558.5464506822.

The spelling of 3785813812 in words is "three billion, seven hundred eighty-five million, eight hundred thirteen thousand, eight hundred twelve".