Cookie Consent by
Search a number
10018189 = 64115629

10018189 has 4 divisors (see below), whose sum is σ = 10034460. Its totient is φ = 10001920.

The previous prime is 10018181. The next prime is 10018193. The reversal of 10018189 is 98181001.

10018189 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9715689 + 302500 = 3117^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 10018189 - 23 = 10018181 is a prime.

It is a super-2 number, since 2×100181892 = 200728221679442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10018181) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7174 + ... + 8455.

It is an arithmetic number, because the mean of its divisors is an integer number (2508615).

Almost surely, 210018189 is an apocalyptic number.

It is an amenable number.

10018189 is a deficient number, since it is larger than the sum of its proper divisors (16271).

10018189 is an equidigital number, since it uses as much as digits as its factorization.

10018189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16270.

The product of its (nonzero) digits is 576, while the sum is 28.

The square root of 10018189 is about 3165.1522870156. The cubic root of 10018189 is about 215.5740132614.

The spelling of 10018189 in words is "ten million, eighteen thousand, one hundred eighty-nine".

Divisors: 1 641 15629 10018189