3845380581 has 32 divisors (see below), whose sum is σ = 6513747200. Its totient is φ = 2196331200.

The previous prime is 3845380579. The next prime is 3845380613. The reversal of 3845380581 is 1850835483.

3845380581 is a `hidden beast` number, since 38 + 4 + 5 + 38 + 0 + 581 = 666.

It is not a de Polignac number, because 3845380581 - 2¹ = 3845380579 is a prime.

It is a super-2 number, since 2×3845380581² = 29573903625463795122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3845380181) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 607131 + ... + 613431.

It is an arithmetic number, because the mean of its divisors is an integer number (203554600).

Almost surely, 2^3845380581 is an apocalyptic number.

It is an amenable number.

3845380581 is a deficient number, since it is larger than the sum of its proper divisors (2668366619).

3845380581 is a wasteful number, since it uses less digits than its factorization.

3845380581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9546 (or 9540 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 3845380581 is about 62011.1327182466. The cubic root of 3845380581 is about 1566.6781131250.

The spelling of 3845380581 in words is "three billion, eight hundred forty-five million, three hundred eighty thousand, five hundred eighty-one".