4165720849 has 8 divisors (see below), whose sum is σ = 4176686592. Its totient is φ = 4154771040.

The previous prime is 4165720799. The next prime is 4165720903. The reversal of 4165720849 is 9480275614.

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 4165720849 - 2¹⁹ = 4165196561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4165720799 and 4165720808.

It is not an unprimeable number, because it can be changed into a prime (4165720649) 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, 653572 + ... + 659914.

It is an arithmetic number, because the mean of its divisors is an integer number (522085824).

Almost surely, 2^4165720849 is an apocalyptic number.

It is an amenable number.

4165720849 is a deficient number, since it is larger than the sum of its proper divisors (10965743).

4165720849 is an equidigital number, since it uses as much as digits as its factorization.

4165720849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7967.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 4165720849 is about 64542.3957488409. The cubic root of 4165720849 is about 1609.0272082065.

The spelling of 4165720849 in words is "four billion, one hundred sixty-five million, seven hundred twenty thousand, eight hundred forty-nine".