3649868989 has 8 divisors (see below), whose sum is σ = 4014259200. Its totient is φ = 3297426096.

The previous prime is 3649868977. The next prime is 3649868993. The reversal of 3649868989 is 9898689463.

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

It is a cyclic number.

It is not a de Polignac number, because 3649868989 - 2⁷ = 3649868861 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 (3649868909) 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 7 ways as a sum of consecutive naturals, for example, 2986189 + ... + 2987410.

It is an arithmetic number, because the mean of its divisors is an integer number (501782400).

Almost surely, 2^3649868989 is an apocalyptic number.

It is an amenable number.

3649868989 is a deficient number, since it is larger than the sum of its proper divisors (364390211).

3649868989 is a wasteful number, since it uses less digits than its factorization.

3649868989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5973659.

The product of its digits is 161243136, while the sum is 70.

The square root of 3649868989 is about 60414.1456034926. The cubic root of 3649868989 is about 1539.6633025934.

The spelling of 3649868989 in words is "three billion, six hundred forty-nine million, eight hundred sixty-eight thousand, nine hundred eighty-nine".