18819058 has 4 divisors (see below), whose sum is σ = 28228590. Its totient is φ = 9409528.

The previous prime is 18819043. The next prime is 18819061. The reversal of 18819058 is 85091881.

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

It can be written as a sum of positive squares in only one way, i.e., 16867449 + 1951609 = 4107^2 + 1397^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 18819058.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4704763 + ... + 4704766.

Almost surely, 2^18819058 is an apocalyptic number.

18819058 is a deficient number, since it is larger than the sum of its proper divisors (9409532).

18819058 is an equidigital number, since it uses as much as digits as its factorization.

18819058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9409531.

The product of its (nonzero) digits is 23040, while the sum is 40.

The square root of 18819058 is about 4338.0938210232. The cubic root of 18819058 is about 265.9903985831.

The spelling of 18819058 in words is "eighteen million, eight hundred nineteen thousand, fifty-eight".