3604368991 has 4 divisors (see below), whose sum is σ = 3623044672. Its totient is φ = 3585693312.

The previous prime is 3604368983. The next prime is 3604369001. The reversal of 3604368991 is 1998634063.

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 3604368991 - 2³ = 3604368983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3604368491) 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, 9337551 + ... + 9337936.

It is an arithmetic number, because the mean of its divisors is an integer number (905761168).

Almost surely, 2^3604368991 is an apocalyptic number.

3604368991 is a deficient number, since it is larger than the sum of its proper divisors (18675681).

3604368991 is a wasteful number, since it uses less digits than its factorization.

3604368991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18675680.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 3604368991 is about 60036.3972186873. The cubic root of 3604368991 is about 1533.2386139610.

The spelling of 3604368991 in words is "three billion, six hundred four million, three hundred sixty-eight thousand, nine hundred ninety-one".