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18107001 = 3211182899
BaseRepresentation
bin100010100010…
…0101001111001
31021001221010200
41011010221321
514113411001
61444032413
7306623043
oct105045171
937057120
1018107001
11a248070
126092709
13399c903
142594a93
1518ca086
hex1144a79

18107001 has 12 divisors (see below), whose sum is σ = 28532400. Its totient is φ = 10973880.

The previous prime is 18106997. The next prime is 18107009. The reversal of 18107001 is 10070181.

18107001 = T190 + T191 + ... + T486.

It is not a de Polignac number, because 18107001 - 22 = 18106997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18107009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91351 + ... + 91548.

It is an arithmetic number, because the mean of its divisors is an integer number (2377700).

Almost surely, 218107001 is an apocalyptic number.

18107001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18107001 is a deficient number, since it is larger than the sum of its proper divisors (10425399).

18107001 is a wasteful number, since it uses less digits than its factorization.

18107001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182916 (or 182913 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 18.

The square root of 18107001 is about 4255.2321910796. The cubic root of 18107001 is about 262.5924137202.

Adding to 18107001 its reverse (10070181), we get a palindrome (28177182).

The spelling of 18107001 in words is "eighteen million, one hundred seven thousand, one".

Divisors: 1 3 9 11 33 99 182899 548697 1646091 2011889 6035667 18107001