3663990493 has 4 divisors (see below), whose sum is σ = 3664338048. Its totient is φ = 3663642940.

The previous prime is 3663990487. The next prime is 3663990497. The reversal of 3663990493 is 3940993663.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3663990493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3663990493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3663990497) 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, 157453 + ... + 179218.

It is an arithmetic number, because the mean of its divisors is an integer number (916084512).

Almost surely, 2^3663990493 is an apocalyptic number.

It is an amenable number.

3663990493 is a deficient number, since it is larger than the sum of its proper divisors (347555).

3663990493 is a wasteful number, since it uses less digits than its factorization.

3663990493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347554.

The product of its (nonzero) digits is 2834352, while the sum is 52.

The square root of 3663990493 is about 60530.9052716049. The cubic root of 3663990493 is about 1541.6464222570.

The spelling of 3663990493 in words is "three billion, six hundred sixty-three million, nine hundred ninety thousand, four hundred ninety-three".