3644289867 has 8 divisors (see below), whose sum is σ = 4925615824. Its totient is φ = 2396245248.

The previous prime is 3644289839. The next prime is 3644289919. The reversal of 3644289867 is 7689824463.

3644289867 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3644289867 - 2⁷ = 3644289739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3644289967) 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 7 ways as a sum of consecutive naturals, for example, 8320078 + ... + 8320515.

It is an arithmetic number, because the mean of its divisors is an integer number (615701978).

Almost surely, 2^3644289867 is an apocalyptic number.

3644289867 is a deficient number, since it is larger than the sum of its proper divisors (1281325957).

3644289867 is a wasteful number, since it uses less digits than its factorization.

3644289867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16640669.

The product of its digits is 13934592, while the sum is 57.

The square root of 3644289867 is about 60367.9539739422. The cubic root of 3644289867 is about 1538.8784022793.

The spelling of 3644289867 in words is "three billion, six hundred forty-four million, two hundred eighty-nine thousand, eight hundred sixty-seven".