164670811409 has 8 divisors (see below), whose sum is σ = 186671365440. Its totient is φ = 144003624336.

The previous prime is 164670811397. The next prime is 164670811433. The reversal of 164670811409 is 904118076461.

It is a happy number.

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

It is not a de Polignac number, because 164670811409 - 2¹⁶ = 164670745873 is a prime.

It is a super-2 number, since 2×164670811409² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164670811499) 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, 333341477 + ... + 333341970.

It is an arithmetic number, because the mean of its divisors is an integer number (23333920680).

Almost surely, 2^164670811409 is an apocalyptic number.

164670811409 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

164670811409 is a deficient number, since it is larger than the sum of its proper divisors (22000554031).

164670811409 is a wasteful number, since it uses less digits than its factorization.

164670811409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666683479.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 164670811409 in words is "one hundred sixty-four billion, six hundred seventy million, eight hundred eleven thousand, four hundred nine".