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17389103893 = 72484157699
BaseRepresentation
bin10000001100011110…
…001010101100010101
31122212212200000002221
4100030132022230111
5241103102311033
611553300502341
71153626641620
oct201436125425
948785600087
1017389103893
117413772147
1234536aa9b1
1318417bb2b5
14bad648db7
156bb93712d
hex40c78ab15

17389103893 has 4 divisors (see below), whose sum is σ = 19873261600. Its totient is φ = 14904946188.

The previous prime is 17389103891. The next prime is 17389103903. The reversal of 17389103893 is 39830198371.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39830198371 = 161832461237.

It is a cyclic number.

It is not a de Polignac number, because 17389103893 - 21 = 17389103891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17389103893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17389103891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1242078843 + ... + 1242078856.

It is an arithmetic number, because the mean of its divisors is an integer number (4968315400).

Almost surely, 217389103893 is an apocalyptic number.

It is an amenable number.

17389103893 is a deficient number, since it is larger than the sum of its proper divisors (2484157707).

17389103893 is an equidigital number, since it uses as much as digits as its factorization.

17389103893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484157706.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 17389103893 in words is "seventeen billion, three hundred eighty-nine million, one hundred three thousand, eight hundred ninety-three".

Divisors: 1 7 2484157699 17389103893