3649044481 has 4 divisors (see below), whose sum is σ = 3649194052. Its totient is φ = 3648894912.

The previous prime is 3649044479. The next prime is 3649044521. The reversal of 3649044481 is 1844409463.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1379379600 + 2269664881 = 37140^2 + 47641^2 .

It is a cyclic number.

It is not a de Polignac number, because 3649044481 - 2¹ = 3649044479 is a prime.

It is a super-2 number, since 2×3649044481² = 26631051248633118722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3649344481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28740 + ... + 90133.

It is an arithmetic number, because the mean of its divisors is an integer number (912298513).

It is a Proth number, since it is equal to 435 ⋅ 2²³ + 1 and 435 < 2²³.

Almost surely, 2^3649044481 is an apocalyptic number.

It is an amenable number.

3649044481 is a deficient number, since it is larger than the sum of its proper divisors (149571).

3649044481 is a wasteful number, since it uses less digits than its factorization.

3649044481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149570.

The product of its (nonzero) digits is 331776, while the sum is 43.

The square root of 3649044481 is about 60407.3214188479. The cubic root of 3649044481 is about 1539.5473568505.

The spelling of 3649044481 in words is "three billion, six hundred forty-nine million, forty-four thousand, four hundred eighty-one".