18441709 has 16 divisors (see below), whose sum is σ = 22417920. Its totient is φ = 14938560.

The previous prime is 18441697. The next prime is 18441727. The reversal of 18441709 is 90714481.

It is not a de Polignac number, because 18441709 - 2¹⁵ = 18408941 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 (18441769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1924 + ... + 6370.

It is an arithmetic number, because the mean of its divisors is an integer number (1401120).

Almost surely, 2^18441709 is an apocalyptic number.

It is an amenable number.

18441709 is a deficient number, since it is larger than the sum of its proper divisors (3976211).

18441709 is a wasteful number, since it uses less digits than its factorization.

18441709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 18441709 is about 4294.3810962699. The cubic root of 18441709 is about 264.2005525742.

It can be divided in two parts, 1844 and 1709, that added together give a palindrome (3553).

The spelling of 18441709 in words is "eighteen million, four hundred forty-one thousand, seven hundred nine".