3649853869 has 8 divisors (see below), whose sum is σ = 3712595040. Its totient is φ = 3587559696.

The previous prime is 3649853821. The next prime is 3649853891. The reversal of 3649853869 is 9683589463.

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 3649853869 - 2⁷ = 3649853741 is a prime.

It is a super-2 number, since 2×3649853869² = 26642866530108538322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649853819) 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, 95259 + ... + 127960.

It is an arithmetic number, because the mean of its divisors is an integer number (464074380).

Almost surely, 2^3649853869 is an apocalyptic number.

It is an amenable number.

3649853869 is a deficient number, since it is larger than the sum of its proper divisors (62741171).

3649853869 is a wasteful number, since it uses less digits than its factorization.

3649853869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223499.

The product of its digits is 33592320, while the sum is 61.

The square root of 3649853869 is about 60414.0204671068. The cubic root of 3649853869 is about 1539.6611765133.

The spelling of 3649853869 in words is "three billion, six hundred forty-nine million, eight hundred fifty-three thousand, eight hundred sixty-nine".