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10018189 = 64115629
BaseRepresentation
bin100110001101…
…110110001101
3200211222101001
4212031312031
510031040224
6554420301
7151103356
oct46156615
920758331
1010018189
1157228a5
123431691
1320c9c2c
14148ad2d
15d2d544
hex98dd8d

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