3785561013 has 16 divisors (see below), whose sum is σ = 5438232576. Its totient is φ = 2328480960.

The previous prime is 3785561011. The next prime is 3785561041. The reversal of 3785561013 is 3101655873.

It is a happy number.

3785561013 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3785561013 - 2¹ = 3785561011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3785561011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65548 + ... + 108938.

It is an arithmetic number, because the mean of its divisors is an integer number (339889536).

Almost surely, 2^3785561013 is an apocalyptic number.

It is an amenable number.

3785561013 is a deficient number, since it is larger than the sum of its proper divisors (1652671563).

3785561013 is a wasteful number, since it uses less digits than its factorization.

3785561013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45644.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 3785561013 is about 61526.9129162190. The cubic root of 3785561013 is about 1558.5117590876.

The spelling of 3785561013 in words is "three billion, seven hundred eighty-five million, five hundred sixty-one thousand, thirteen".