3664635549 has 8 divisors (see below), whose sum is σ = 5173603200. Its totient is φ = 2299379136.

The previous prime is 3664635497. The next prime is 3664635571. The reversal of 3664635549 is 9455364663.

3664635549 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3664635549 - 2¹⁷ = 3664504477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 71855599 = 3664635549 / (3 + 6 + 6 + 4 + 6 + 3 + 5 + 5 + 4 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3664635589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35927749 + ... + 35927850.

It is an arithmetic number, because the mean of its divisors is an integer number (646700400).

Almost surely, 2^3664635549 is an apocalyptic number.

It is an amenable number.

3664635549 is a deficient number, since it is larger than the sum of its proper divisors (1508967651).

3664635549 is a wasteful number, since it uses less digits than its factorization.

3664635549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71855619.

The product of its digits is 6998400, while the sum is 51.

The square root of 3664635549 is about 60536.2333565609. The cubic root of 3664635549 is about 1541.7368873682.

The spelling of 3664635549 in words is "three billion, six hundred sixty-four million, six hundred thirty-five thousand, five hundred forty-nine".