18693041 has 4 divisors (see below), whose sum is σ = 18774900. Its totient is φ = 18611184.

The previous prime is 18693019. The next prime is 18693049. The reversal of 18693041 is 14039681.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14039681 = 293 ⋅47917.

It can be written as a sum of positive squares in 2 ways, for example, as 16120225 + 2572816 = 4015^2 + 1604^2 .

It is a cyclic number.

It is not a de Polignac number, because 18693041 - 2⁶ = 18692977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18692989 and 18693007.

It is not an unprimeable number, because it can be changed into a prime (18693049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40586 + ... + 41043.

It is an arithmetic number, because the mean of its divisors is an integer number (4693725).

Almost surely, 2^18693041 is an apocalyptic number.

It is an amenable number.

18693041 is a deficient number, since it is larger than the sum of its proper divisors (81859).

18693041 is an equidigital number, since it uses as much as digits as its factorization.

18693041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81858.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 18693041 is about 4323.5449575551. The cubic root of 18693041 is about 265.3953562335.

The spelling of 18693041 in words is "eighteen million, six hundred ninety-three thousand, forty-one".