3649981936 has 20 divisors (see below), whose sum is σ = 7103559232. Its totient is φ = 1816805376.

The previous prime is 3649981931. The next prime is 3649981961. The reversal of 3649981936 is 6391899463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649981931) 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 3 ways as a sum of consecutive naturals, for example, 507921 + ... + 515056.

Almost surely, 2^3649981936 is an apocalyptic number.

It is an amenable number.

3649981936 is a deficient number, since it is larger than the sum of its proper divisors (3453577296).

3649981936 is a wasteful number, since it uses less digits than its factorization.

3649981936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023208 (or 1023202 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 58.

The square root of 3649981936 is about 60415.0803690602. The cubic root of 3649981936 is about 1539.6791843102.

The spelling of 3649981936 in words is "three billion, six hundred forty-nine million, nine hundred eighty-one thousand, nine hundred thirty-six".