3618161 has 8 divisors (see below), whose sum is σ = 3848544. Its totient is φ = 3389760.

The previous prime is 3618157. The next prime is 3618163. The reversal of 3618161 is 1618163.

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 3618161 - 2² = 3618157 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3618161.

It is not an unprimeable number, because it can be changed into a prime (3618163) by changing a digit.

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, 5306 + ... + 5948.

It is an arithmetic number, because the mean of its divisors is an integer number (481068).

Almost surely, 2^3618161 is an apocalyptic number.

It is an amenable number.

3618161 is a deficient number, since it is larger than the sum of its proper divisors (230383).

3618161 is a wasteful number, since it uses less digits than its factorization.

3618161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991.

The product of its digits is 864, while the sum is 26.

The square root of 3618161 is about 1902.1464191802. The cubic root of 3618161 is about 153.5191755268.

It can be divided in two parts, 36 and 18161, that multiplied together give a triangular number (653796 = T₁₁₄₃).

The spelling of 3618161 in words is "three million, six hundred eighteen thousand, one hundred sixty-one".