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1263223853 is a prime number
BaseRepresentation
bin100101101001011…
…0100010000101101
310021000222102100122
41023102310100231
510041341130403
6325203134325
743206140243
oct11322642055
93230872318
101263223853
11599069861
122b30743a5
1317192c948
14bdaaa793
1575d78838
hex4b4b442d

1263223853 has 2 divisors, whose sum is σ = 1263223854. Its totient is φ = 1263223852.

The previous prime is 1263223837. The next prime is 1263223861. The reversal of 1263223853 is 3583223621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1243126564 + 20097289 = 35258^2 + 4483^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263223853 - 24 = 1263223837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263223823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631611926 + 631611927.

It is an arithmetic number, because the mean of its divisors is an integer number (631611927).

Almost surely, 21263223853 is an apocalyptic number.

It is an amenable number.

1263223853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263223853 is an equidigital number, since it uses as much as digits as its factorization.

1263223853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 35.

The square root of 1263223853 is about 35541.8605731326. The cubic root of 1263223853 is about 1081.0026847769.

The spelling of 1263223853 in words is "one billion, two hundred sixty-three million, two hundred twenty-three thousand, eight hundred fifty-three".