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19196194145 = 512730230227
BaseRepresentation
bin10001111000001011…
…101010110101100001
31211112211000200220112
4101320023222311201
5303303211203040
612452453021105
71246461646412
oct217013526541
954484020815
1019196194145
118160829867
123878924795
131a6bcc167b
14d01649809
157753e1365
hex4782ead61

19196194145 has 8 divisors (see below), whose sum is σ = 23216815104. Its totient is φ = 15236033904.

The previous prime is 19196194103. The next prime is 19196194159. The reversal of 19196194145 is 54149169191.

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 19196194145 - 28 = 19196193889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19196194093 and 19196194102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15114479 + ... + 15115748.

It is an arithmetic number, because the mean of its divisors is an integer number (2902101888).

Almost surely, 219196194145 is an apocalyptic number.

It is an amenable number.

19196194145 is a deficient number, since it is larger than the sum of its proper divisors (4020620959).

19196194145 is a wasteful number, since it uses less digits than its factorization.

19196194145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30230359.

The product of its digits is 349920, while the sum is 50.

The spelling of 19196194145 in words is "nineteen billion, one hundred ninety-six million, one hundred ninety-four thousand, one hundred forty-five".

Divisors: 1 5 127 635 30230227 151151135 3839238829 19196194145