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38189286068 = 2219748463561
BaseRepresentation
bin100011100100010000…
…100100001010110100
310122120110212201221112
4203210100210022310
51111202424123233
625313252534152
72521236401303
oct434420441264
9118513781845
1038189286068
111521794694a
127499621358
1337a7bb09bb
141bc3d0643a
15ed7a64048
hex8e44242b4

38189286068 has 12 divisors (see below), whose sum is σ = 67170496932. Its totient is φ = 18997715520.

The previous prime is 38189286067. The next prime is 38189286071. The reversal of 38189286068 is 86068298183.

It can be written as a sum of positive squares in 2 ways, for example, as 30578817424 + 7610468644 = 174868^2 + 87238^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38189285998 and 38189286016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38189286061) by changing a digit.

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, 24230993 + ... + 24232568.

It is an arithmetic number, because the mean of its divisors is an integer number (5597541411).

Almost surely, 238189286068 is an apocalyptic number.

It is an amenable number.

38189286068 is a deficient number, since it is larger than the sum of its proper divisors (28981210864).

38189286068 is a wasteful number, since it uses less digits than its factorization.

38189286068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48463762 (or 48463760 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 59.

The spelling of 38189286068 in words is "thirty-eight billion, one hundred eighty-nine million, two hundred eighty-six thousand, sixty-eight".

Divisors: 1 2 4 197 394 788 48463561 96927122 193854244 9547321517 19094643034 38189286068