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1027660141 = 1181870161
BaseRepresentation
bin111101010000001…
…101100101101101
32122121201112200201
4331100031211231
54101040111031
6245550153501
734315652464
oct7520154555
92577645621
101027660141
114880a6302
122481b2891
13134ba3131
149a6ab9db
1560346d61
hex3d40d96d

1027660141 has 4 divisors (see below), whose sum is σ = 1028531484. Its totient is φ = 1026788800.

The previous prime is 1027660103. The next prime is 1027660157. The reversal of 1027660141 is 1410667201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1410667201 = 6612134141.

It can be written as a sum of positive squares in 2 ways, for example, as 926958916 + 100701225 = 30446^2 + 10035^2 .

It is a cyclic number.

It is not a de Polignac number, because 1027660141 - 219 = 1027135853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1027660541) 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, 433900 + ... + 436261.

It is an arithmetic number, because the mean of its divisors is an integer number (257132871).

Almost surely, 21027660141 is an apocalyptic number.

It is an amenable number.

1027660141 is a deficient number, since it is larger than the sum of its proper divisors (871343).

1027660141 is an equidigital number, since it uses as much as digits as its factorization.

1027660141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871342.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1027660141 is about 32057.1386901576. The cubic root of 1027660141 is about 1009.1363204388.

The spelling of 1027660141 in words is "one billion, twenty-seven million, six hundred sixty thousand, one hundred forty-one".

Divisors: 1 1181 870161 1027660141