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19182001 = 171959387
BaseRepresentation
bin100100100101…
…1000110110001
31100002112202111
41021023012301
514402311001
61523045321
7322021126
oct111130661
940075674
1019182001
11a9117a3
126510841
133c87cc7
14279474d
151a3d851
hex124b1b1

19182001 has 8 divisors (see below), whose sum is σ = 21379680. Its totient is φ = 17103168.

The previous prime is 19181971. The next prime is 19182011. The reversal of 19182001 is 10028191.

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 19182001 - 29 = 19181489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19182011) 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 7 ways as a sum of consecutive naturals, for example, 29371 + ... + 30016.

It is an arithmetic number, because the mean of its divisors is an integer number (2672460).

Almost surely, 219182001 is an apocalyptic number.

It is an amenable number.

19182001 is a deficient number, since it is larger than the sum of its proper divisors (2197679).

19182001 is a wasteful number, since it uses less digits than its factorization.

19182001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59423.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 19182001 is about 4379.7261329905. The cubic root of 19182001 is about 267.6894794025.

The spelling of 19182001 in words is "nineteen million, one hundred eighty-two thousand, one".

Divisors: 1 17 19 323 59387 1009579 1128353 19182001