4161965 has 8 divisors (see below), whose sum is σ = 5211648. Its totient is φ = 3184720.

The previous prime is 4161959. The next prime is 4161977. The reversal of 4161965 is 5691614.

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

It is not a de Polignac number, because 4161965 - 2¹⁰ = 4160941 is a prime.

It is a super-2 number, since 2×4161965² = 34643905322450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17981 + ... + 18210.

It is an arithmetic number, because the mean of its divisors is an integer number (651456).

Almost surely, 2^4161965 is an apocalyptic number.

It is an amenable number.

4161965 is a deficient number, since it is larger than the sum of its proper divisors (1049683).

4161965 is a wasteful number, since it uses less digits than its factorization.

4161965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36219.

The product of its digits is 6480, while the sum is 32.

The square root of 4161965 is about 2040.0894588228. The cubic root of 4161965 is about 160.8543491976.

The spelling of 4161965 in words is "four million, one hundred sixty-one thousand, nine hundred sixty-five".