3585978981 has 24 divisors (see below), whose sum is σ = 5648814080. Its totient is φ = 2178817056.

The previous prime is 3585978943. The next prime is 3585979009. The reversal of 3585978981 is 1898795853.

3585978981 is a `hidden beast` number, since 35 + 8 + 597 + 8 + 9 + 8 + 1 = 666.

It is not a de Polignac number, because 3585978981 - 2¹⁵ = 3585946213 is a prime.

It is a super-2 number, since 2×3585978981² = 25718490504347596722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3585978931) 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 23 ways as a sum of consecutive naturals, for example, 184741 + ... + 203226.

Almost surely, 2^3585978981 is an apocalyptic number.

It is an amenable number.

3585978981 is a deficient number, since it is larger than the sum of its proper divisors (2062835099).

3585978981 is a wasteful number, since it uses less digits than its factorization.

3585978981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388065 (or 388062 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 63.

The square root of 3585978981 is about 59883.0441861467. The cubic root of 3585978981 is about 1530.6265651095.

The spelling of 3585978981 in words is "three billion, five hundred eighty-five million, nine hundred seventy-eight thousand, nine hundred eighty-one".