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8135102869 is a prime number
BaseRepresentation
bin1111001001110001…
…11101000110010101
3202222221122001012021
413210320331012111
5113130041242434
63423123253141
7405411143035
oct74470750625
922887561167
108135102869
1134a5065213
1216b051a1b1
139c852744a
145725d58c5
153292d5cb4
hex1e4e3d195

8135102869 has 2 divisors, whose sum is σ = 8135102870. Its totient is φ = 8135102868.

The previous prime is 8135102813. The next prime is 8135102879. The reversal of 8135102869 is 9682015318.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7571610225 + 563492644 = 87015^2 + 23738^2 .

It is a cyclic number.

It is not a de Polignac number, because 8135102869 - 211 = 8135100821 is a prime.

It is a super-2 number, since 2×81351028692 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8135102879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4067551434 + 4067551435.

It is an arithmetic number, because the mean of its divisors is an integer number (4067551435).

Almost surely, 28135102869 is an apocalyptic number.

It is an amenable number.

8135102869 is a deficient number, since it is larger than the sum of its proper divisors (1).

8135102869 is an equidigital number, since it uses as much as digits as its factorization.

8135102869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 8135102869 is about 90194.8051109375. The cubic root of 8135102869 is about 2011.1957826964.

The spelling of 8135102869 in words is "eight billion, one hundred thirty-five million, one hundred two thousand, eight hundred sixty-nine".