18058045 has 8 divisors (see below), whose sum is σ = 21783096. Its totient is φ = 14370816.

The previous prime is 18058021. The next prime is 18058091. The reversal of 18058045 is 54085081.

It can be written as a sum of positive squares in 4 ways, for example, as 2042041 + 16016004 = 1429^2 + 4002^2 .

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 18058045 - 2¹¹ = 18055997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18057998 and 18058016.

It is a congruent number.

It is an unprimeable number.

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, 8392 + ... + 10321.

It is an arithmetic number, because the mean of its divisors is an integer number (2722887).

Almost surely, 2^18058045 is an apocalyptic number.

It is an amenable number.

18058045 is a deficient number, since it is larger than the sum of its proper divisors (3725051).

18058045 is a wasteful number, since it uses less digits than its factorization.

18058045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18911.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 18058045 is about 4249.4758500314. The cubic root of 18058045 is about 262.3555425887.

It can be divided in two parts, 180580 and 45, that added together give a square (180625 = 425²).

The spelling of 18058045 in words is "eighteen million, fifty-eight thousand, forty-five".