164364438689 has 16 divisors (see below), whose sum is σ = 196950113280. Its totient is φ = 135403194960.

The previous prime is 164364438617. The next prime is 164364438697. The reversal of 164364438689 is 986834463461.

It is a de Polignac number, because none of the positive numbers 2^k-164364438689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164364438389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17091557 + ... + 17101170.

It is an arithmetic number, because the mean of its divisors is an integer number (12309382080).

Almost surely, 2^164364438689 is an apocalyptic number.

164364438689 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

164364438689 is a deficient number, since it is larger than the sum of its proper divisors (32585674591).

164364438689 is a wasteful number, since it uses less digits than its factorization.

164364438689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34192780.

The product of its digits is 71663616, while the sum is 62.

The spelling of 164364438689 in words is "one hundred sixty-four billion, three hundred sixty-four million, four hundred thirty-eight thousand, six hundred eighty-nine".