3651530249 has 4 divisors (see below), whose sum is σ = 3866326164. Its totient is φ = 3436734336.

The previous prime is 3651530243. The next prime is 3651530279. The reversal of 3651530249 is 9420351563.

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 1576090000 + 2075440249 = 39700^2 + 45557^2 .

It is a cyclic number.

It is not a de Polignac number, because 3651530249 - 2⁸ = 3651529993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3651530243) 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, 107397932 + ... + 107397965.

It is an arithmetic number, because the mean of its divisors is an integer number (966581541).

Almost surely, 2^3651530249 is an apocalyptic number.

It is an amenable number.

3651530249 is a deficient number, since it is larger than the sum of its proper divisors (214795915).

3651530249 is a wasteful number, since it uses less digits than its factorization.

3651530249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214795914.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 3651530249 is about 60427.8929717064. The cubic root of 3651530249 is about 1539.8968628573.

The spelling of 3651530249 in words is "three billion, six hundred fifty-one million, five hundred thirty thousand, two hundred forty-nine".