3681445567 has 4 divisors (see below), whose sum is σ = 3875205880. Its totient is φ = 3487685256.

The previous prime is 3681445549. The next prime is 3681445589. The reversal of 3681445567 is 7655441863.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3681445567 - 2¹⁵ = 3681412799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3681445567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681445507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96880128 + ... + 96880165.

It is an arithmetic number, because the mean of its divisors is an integer number (968801470).

Almost surely, 2^3681445567 is an apocalyptic number.

3681445567 is a deficient number, since it is larger than the sum of its proper divisors (193760313).

3681445567 is a wasteful number, since it uses less digits than its factorization.

3681445567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193760312.

The product of its digits is 2419200, while the sum is 49.

The square root of 3681445567 is about 60674.9171157242. The cubic root of 3681445567 is about 1544.0906546893.

The spelling of 3681445567 in words is "three billion, six hundred eighty-one million, four hundred forty-five thousand, five hundred sixty-seven".