18114661 has 8 divisors (see below), whose sum is σ = 18666648. Its totient is φ = 17568000.

The previous prime is 18114641. The next prime is 18114671. The reversal of 18114661 is 16641181.

It can be written as a sum of positive squares in 4 ways, for example, as 3629025 + 14485636 = 1905^2 + 3806^2 .

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 18114661 - 2⁷ = 18114533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18114611) 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, 6201 + ... + 8641.

It is an arithmetic number, because the mean of its divisors is an integer number (2333331).

Almost surely, 2^18114661 is an apocalyptic number.

It is an amenable number.

18114661 is a deficient number, since it is larger than the sum of its proper divisors (551987).

18114661 is a wasteful number, since it uses less digits than its factorization.

18114661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663.

The product of its digits is 1152, while the sum is 28.

The square root of 18114661 is about 4256.1321643013. The cubic root of 18114661 is about 262.6294376005.

It can be divided in two parts, 181 and 14661, that multiplied together give a square (2653641 = 1629²).

The spelling of 18114661 in words is "eighteen million, one hundred fourteen thousand, six hundred sixty-one".