18708575 has 6 divisors (see below), whose sum is σ = 23198664. Its totient is φ = 14966840.

The previous prime is 18708563. The next prime is 18708581. The reversal of 18708575 is 57580781.

It is not a de Polignac number, because 18708575 - 2¹⁶ = 18643039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 374147 + ... + 374196.

It is an arithmetic number, because the mean of its divisors is an integer number (3866444).

Almost surely, 2^18708575 is an apocalyptic number.

18708575 is a deficient number, since it is larger than the sum of its proper divisors (4490089).

18708575 is an equidigital number, since it uses as much as digits as its factorization.

18708575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748353 (or 748348 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 41.

The square root of 18708575 is about 4325.3410270174. The cubic root of 18708575 is about 265.4688507853.

The spelling of 18708575 in words is "eighteen million, seven hundred eight thousand, five hundred seventy-five".