164020192909 has 8 divisors (see below), whose sum is σ = 169680863160. Its totient is φ = 158359842816.

The previous prime is 164020192883. The next prime is 164020192969. The reversal of 164020192909 is 909291020461.

It can be written as a sum of positive squares in 4 ways, for example, as 52879302025 + 111140890884 = 229955^2 + 333378^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 164020192909 - 2¹⁷ = 164020061837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164020192969) 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 7 ways as a sum of consecutive naturals, for example, 1473829 + ... + 1581205.

It is an arithmetic number, because the mean of its divisors is an integer number (21210107895).

Almost surely, 2^164020192909 is an apocalyptic number.

It is an amenable number.

164020192909 is a deficient number, since it is larger than the sum of its proper divisors (5660670251).

164020192909 is a wasteful number, since it uses less digits than its factorization.

164020192909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160079.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 164020192909 in words is "one hundred sixty-four billion, twenty million, one hundred ninety-two thousand, nine hundred nine".