4018161 has 8 divisors (see below), whose sum is σ = 6122944. Its totient is φ = 2296080.

The previous prime is 4018159. The next prime is 4018181. The reversal of 4018161 is 1618104.

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

It is not a de Polignac number, because 4018161 - 2¹ = 4018159 is a prime.

It is a super-2 number, since 2×4018161² = 32291235643842, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 191341 = 4018161 / (4 + 0 + 1 + 8 + 1 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4018151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95650 + ... + 95691.

It is an arithmetic number, because the mean of its divisors is an integer number (765368).

Almost surely, 2^4018161 is an apocalyptic number.

It is an amenable number.

4018161 is a deficient number, since it is larger than the sum of its proper divisors (2104783).

4018161 is a wasteful number, since it uses less digits than its factorization.

4018161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191351.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 4018161 is about 2004.5351081984. The cubic root of 4018161 is about 158.9799824489.

The spelling of 4018161 in words is "four million, eighteen thousand, one hundred sixty-one".