3663208491 has 8 divisors (see below), whose sum is σ = 4932637584. Its totient is φ = 2417959200.

The previous prime is 3663208469. The next prime is 3663208519. The reversal of 3663208491 is 1948023663.

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

It is not a de Polignac number, because 3663208491 - 2¹⁴ = 3663192107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3663208391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6044596 + ... + 6045201.

It is an arithmetic number, because the mean of its divisors is an integer number (616579698).

Almost surely, 2^3663208491 is an apocalyptic number.

3663208491 is a deficient number, since it is larger than the sum of its proper divisors (1269429093).

3663208491 is a wasteful number, since it uses less digits than its factorization.

3663208491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12089901.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 3663208491 is about 60524.4454001852. The cubic root of 3663208491 is about 1541.5367370776.

The spelling of 3663208491 in words is "three billion, six hundred sixty-three million, two hundred eight thousand, four hundred ninety-one".