3581440681 has 16 divisors (see below), whose sum is σ = 4412548224. Its totient is φ = 2830696704.

The previous prime is 3581440669. The next prime is 3581440703. The reversal of 3581440681 is 1860441853.

It is a cyclic number.

It is not a de Polignac number, because 3581440681 - 2⁵ = 3581440649 is a prime.

It is a super-2 number, since 2×3581440681² = 25653434703043487522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3581440661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68766 + ... + 109048.

It is an arithmetic number, because the mean of its divisors is an integer number (275784264).

Almost surely, 2^3581440681 is an apocalyptic number.

It is an amenable number.

3581440681 is a deficient number, since it is larger than the sum of its proper divisors (831107543).

3581440681 is a wasteful number, since it uses less digits than its factorization.

3581440681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41280.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 3581440681 is about 59845.1391593336. The cubic root of 3581440681 is about 1529.9805885586.

The spelling of 3581440681 in words is "three billion, five hundred eighty-one million, four hundred forty thousand, six hundred eighty-one".