18289141 has 4 divisors (see below), whose sum is σ = 19696012. Its totient is φ = 16882272.

The previous prime is 18289123. The next prime is 18289151. The reversal of 18289141 is 14198281.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7700625 + 10588516 = 2775^2 + 3254^2 .

It is a cyclic number.

It is not a de Polignac number, because 18289141 - 2⁵ = 18289109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18289097 and 18289106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18289151) 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 3 ways as a sum of consecutive naturals, for example, 703416 + ... + 703441.

It is an arithmetic number, because the mean of its divisors is an integer number (4924003).

Almost surely, 2^18289141 is an apocalyptic number.

It is an amenable number.

18289141 is a deficient number, since it is larger than the sum of its proper divisors (1406871).

18289141 is a wasteful number, since it uses less digits than its factorization.

18289141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406870.

The product of its digits is 4608, while the sum is 34.

The square root of 18289141 is about 4276.5805265422. The cubic root of 18289141 is about 263.4699583003.

The spelling of 18289141 in words is "eighteen million, two hundred eighty-nine thousand, one hundred forty-one".