3638454459 has 8 divisors (see below), whose sum is σ = 4982388240. Its totient is φ = 2360078496.

The previous prime is 3638454451. The next prime is 3638454481. The reversal of 3638454459 is 9544548363.

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

It is not a de Polignac number, because 3638454459 - 2³ = 3638454451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3638454451) 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, 16389324 + ... + 16389545.

It is an arithmetic number, because the mean of its divisors is an integer number (622798530).

Almost surely, 2^3638454459 is an apocalyptic number.

3638454459 is a deficient number, since it is larger than the sum of its proper divisors (1343933781).

3638454459 is a wasteful number, since it uses less digits than its factorization.

3638454459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32778909.

The product of its digits is 6220800, while the sum is 51.

The square root of 3638454459 is about 60319.6026097653. The cubic root of 3638454459 is about 1538.0565887031.

The spelling of 3638454459 in words is "three billion, six hundred thirty-eight million, four hundred fifty-four thousand, four hundred fifty-nine".