3638212069 has 8 divisors (see below), whose sum is σ = 3727586720. Its totient is φ = 3549054096.

The previous prime is 3638212057. The next prime is 3638212073. The reversal of 3638212069 is 9602128363.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3638212069 is a prime.

It is a super-2 number, since 2×3638212069² = 26473174118034521522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3638212469) 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, 19914 + ... + 87595.

It is an arithmetic number, because the mean of its divisors is an integer number (465948340).

Almost surely, 2^3638212069 is an apocalyptic number.

It is an amenable number.

3638212069 is a deficient number, since it is larger than the sum of its proper divisors (89374651).

3638212069 is a wasteful number, since it uses less digits than its factorization.

3638212069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108339.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 3638212069 is about 60317.5933621361. The cubic root of 3638212069 is about 1538.0224333752.

The spelling of 3638212069 in words is "three billion, six hundred thirty-eight million, two hundred twelve thousand, sixty-nine".