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38188343147 = 318238811699
BaseRepresentation
bin100011100100001100…
…111101111101101011
310122120102002211111112
4203210030331331223
51111202203440042
625313220420535
72521225363253
oct434414757553
9118512084445
1038188343147
1115217362479
12749924774b
1337a7940766
141bc3b3c963
15ed7929982
hex8e433df6b

38188343147 has 16 divisors (see below), whose sum is σ = 39536179200. Its totient is φ = 36847958400.

The previous prime is 38188343131. The next prime is 38188343173. The reversal of 38188343147 is 74134388183.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 38188343147 - 24 = 38188343131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38188343095 and 38188343104.

It is not an unprimeable number, because it can be changed into a prime (38188343117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22476104 + ... + 22477802.

It is an arithmetic number, because the mean of its divisors is an integer number (2471011200).

Almost surely, 238188343147 is an apocalyptic number.

38188343147 is a deficient number, since it is larger than the sum of its proper divisors (1347836053).

38188343147 is a wasteful number, since it uses less digits than its factorization.

38188343147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3434.

The product of its digits is 1548288, while the sum is 50.

The spelling of 38188343147 in words is "thirty-eight billion, one hundred eighty-eight million, three hundred forty-three thousand, one hundred forty-seven".

Divisors: 1 31 823 881 1699 25513 27311 52669 725063 1398277 1496819 22476953 43346587 46401389 1231882037 38188343147