164415569849 has 2 divisors, whose sum is σ = 164415569850. Its totient is φ = 164415569848.

The previous prime is 164415569833. The next prime is 164415569933. The reversal of 164415569849 is 948965514461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160144032400 + 4271537449 = 400180^2 + 65357^2 .

It is a cyclic number.

It is not a de Polignac number, because 164415569849 - 2⁴ = 164415569833 is a prime.

It is a super-3 number, since 3×164415569849³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164415569791 and 164415569800.

It is not a weakly prime, because it can be changed into another prime (164415529849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82207784924 + 82207784925.

It is an arithmetic number, because the mean of its divisors is an integer number (82207784925).

Almost surely, 2^164415569849 is an apocalyptic number.

It is an amenable number.

164415569849 is a deficient number, since it is larger than the sum of its proper divisors (1).

164415569849 is an equidigital number, since it uses as much as digits as its factorization.

164415569849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37324800, while the sum is 62.

The spelling of 164415569849 in words is "one hundred sixty-four billion, four hundred fifteen million, five hundred sixty-nine thousand, eight hundred forty-nine".