3581612385 has 64 divisors (see below), whose sum is σ = 6513696000. Its totient is φ = 1665957888.

The previous prime is 3581612381. The next prime is 3581612407. The reversal of 3581612385 is 5832161853.

3581612385 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3581612385 - 2² = 3581612381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3581612381) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1662469 + ... + 1664621.

It is an arithmetic number, because the mean of its divisors is an integer number (101776500).

Almost surely, 2^3581612385 is an apocalyptic number.

It is an amenable number.

3581612385 is a deficient number, since it is larger than the sum of its proper divisors (2932083615).

3581612385 is a wasteful number, since it uses less digits than its factorization.

3581612385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642.

The product of its digits is 172800, while the sum is 42.

The square root of 3581612385 is about 59846.5737114498. The cubic root of 3581612385 is about 1530.0050386438.

The spelling of 3581612385 in words is "three billion, five hundred eighty-one million, six hundred twelve thousand, three hundred eighty-five".