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1868618341 = 31293409503
BaseRepresentation
bin110111101100000…
…1101101001100101
311211020010122110201
41233120031221211
512311331241331
6505230550501
764206664612
oct15730155145
94736118421
101868618341
11879871687
12441968431
1323a196a35
1413a259509
15ae0aea61
hex6f60da65

1868618341 has 16 divisors (see below), whose sum is σ = 1944069120. Its totient is φ = 1794188160.

The previous prime is 1868618333. The next prime is 1868618377. The reversal of 1868618341 is 1438168681.

It is a cyclic number.

It is not a de Polignac number, because 1868618341 - 23 = 1868618333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1868618291 and 1868618300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868618641) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3714696 + ... + 3715198.

It is an arithmetic number, because the mean of its divisors is an integer number (121504320).

Almost surely, 21868618341 is an apocalyptic number.

It is an amenable number.

1868618341 is a deficient number, since it is larger than the sum of its proper divisors (75450779).

1868618341 is a wasteful number, since it uses less digits than its factorization.

1868618341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236.

The product of its digits is 221184, while the sum is 46.

The square root of 1868618341 is about 43227.5183303414. The cubic root of 1868618341 is about 1231.7054670368.

The spelling of 1868618341 in words is "one billion, eight hundred sixty-eight million, six hundred eighteen thousand, three hundred forty-one".

Divisors: 1 31 293 409 503 9083 12679 15593 119837 147379 205727 3714947 4568749 6377537 60278011 1868618341