3521604549 has 8 divisors (see below), whose sum is σ = 4697452672. Its totient is φ = 2346746400.

The previous prime is 3521604523. The next prime is 3521604563. The reversal of 3521604549 is 9454061253.

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

It is not a de Polignac number, because 3521604549 - 2⁵ = 3521604517 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 (3521604509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239152 + ... + 253449.

It is an arithmetic number, because the mean of its divisors is an integer number (587181584).

Almost surely, 2^3521604549 is an apocalyptic number.

It is an amenable number.

3521604549 is a deficient number, since it is larger than the sum of its proper divisors (1175848123).

3521604549 is a wasteful number, since it uses less digits than its factorization.

3521604549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494987.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 3521604549 is about 59343.1086900577. The cubic root of 3521604549 is about 1521.4120864494.

The spelling of 3521604549 in words is "three billion, five hundred twenty-one million, six hundred four thousand, five hundred forty-nine".