4665138689 has 4 divisors (see below), whose sum is σ = 4708738224. Its totient is φ = 4621539156.

The previous prime is 4665138683. The next prime is 4665138697. The reversal of 4665138689 is 9868315664.

It is a happy number.

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-4665138689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4665138683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21799607 + ... + 21799820.

It is an arithmetic number, because the mean of its divisors is an integer number (1177184556).

Almost surely, 2^4665138689 is an apocalyptic number.

It is an amenable number.

4665138689 is a deficient number, since it is larger than the sum of its proper divisors (43599535).

4665138689 is a wasteful number, since it uses less digits than its factorization.

4665138689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43599534.

The product of its digits is 7464960, while the sum is 56.

The square root of 4665138689 is about 68301.8205394263. The cubic root of 4665138689 is about 1670.9169058578.

The spelling of 4665138689 in words is "four billion, six hundred sixty-five million, one hundred thirty-eight thousand, six hundred eighty-nine".