3585138381 has 64 divisors (see below), whose sum is σ = 6162739200. Its totient is φ = 2035756800.

The previous prime is 3585138377. The next prime is 3585138391. The reversal of 3585138381 is 1838315853.

3585138381 is a `hidden beast` number, since 3 + 58 + 513 + 8 + 3 + 81 = 666.

It is not a de Polignac number, because 3585138381 - 2² = 3585138377 is a prime.

It is a super-2 number, since 2×3585138381² = 25706434421838602322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3585138301) 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 63 ways as a sum of consecutive naturals, for example, 1205226 + ... + 1208196.

It is an arithmetic number, because the mean of its divisors is an integer number (96292800).

Almost surely, 2^3585138381 is an apocalyptic number.

It is an amenable number.

3585138381 is a deficient number, since it is larger than the sum of its proper divisors (2577600819).

3585138381 is a wasteful number, since it uses less digits than its factorization.

3585138381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247 (or 3241 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 3585138381 is about 59876.0250935214. The cubic root of 3585138381 is about 1530.5069561876.

The spelling of 3585138381 in words is "three billion, five hundred eighty-five million, one hundred thirty-eight thousand, three hundred eighty-one".