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19085195 = 53817039
BaseRepresentation
bin100100011001…
…1011110001011
31022220121222002
41020303132023
514341211240
61521021215
7321135653
oct110633613
938817862
1019085195
11a855a98
12648480b
133c52c1c
14276b363
151a1ed15
hex123378b

19085195 has 4 divisors (see below), whose sum is σ = 22902240. Its totient is φ = 15268152.

The previous prime is 19085173. The next prime is 19085201. The reversal of 19085195 is 59158091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59158091 = 70184391.

It is a cyclic number.

It is not a de Polignac number, because 19085195 - 214 = 19068811 is a prime.

It is a plaindrome in base 16.

It is an unprimeable number.

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, 1908515 + ... + 1908524.

It is an arithmetic number, because the mean of its divisors is an integer number (5725560).

Almost surely, 219085195 is an apocalyptic number.

19085195 is a deficient number, since it is larger than the sum of its proper divisors (3817045).

19085195 is an equidigital number, since it uses as much as digits as its factorization.

19085195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3817044.

The product of its (nonzero) digits is 16200, while the sum is 38.

The square root of 19085195 is about 4368.6605498711. The cubic root of 19085195 is about 267.2384026566.

The spelling of 19085195 in words is "nineteen million, eighty-five thousand, one hundred ninety-five".

Divisors: 1 5 3817039 19085195