10188985 has 8 divisors (see below), whose sum is σ = 12457800. Its totient is φ = 7997184.

The previous prime is 10188973. The next prime is 10188991. The reversal of 10188985 is 58988101.

It can be written as a sum of positive squares in 4 ways, for example, as 82944 + 10106041 = 288^2 + 3179^2 .

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 10188985 - 2⁹ = 10188473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18960 + ... + 19489.

It is an arithmetic number, because the mean of its divisors is an integer number (1557225).

Almost surely, 2^10188985 is an apocalyptic number.

It is an amenable number.

10188985 is a deficient number, since it is larger than the sum of its proper divisors (2268815).

10188985 is an equidigital number, since it uses as much as digits as its factorization.

10188985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38507.

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

The square root of 10188985 is about 3192.0189535778. The cubic root of 10188985 is about 216.7921941903.

The spelling of 10188985 in words is "ten million, one hundred eighty-eight thousand, nine hundred eighty-five".