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133915853 is a prime number
BaseRepresentation
bin1111111101101…
…10010011001101
3100022222122000102
413332312103031
5233240301403
621142140445
73214160141
oct776662315
9308878012
10133915853
1169656a65
1238a21725
1321989c66
1413add221
15bb53b88
hex7fb64cd

133915853 has 2 divisors, whose sum is σ = 133915854. Its totient is φ = 133915852.

The previous prime is 133915841. The next prime is 133915861. The reversal of 133915853 is 358519331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111239209 + 22676644 = 10547^2 + 4762^2 .

It is a cyclic number.

It is not a de Polignac number, because 133915853 - 226 = 66806989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133915813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66957926 + 66957927.

It is an arithmetic number, because the mean of its divisors is an integer number (66957927).

Almost surely, 2133915853 is an apocalyptic number.

It is an amenable number.

133915853 is a deficient number, since it is larger than the sum of its proper divisors (1).

133915853 is an equidigital number, since it uses as much as digits as its factorization.

133915853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 38.

The square root of 133915853 is about 11572.2017351928. The cubic root of 133915853 is about 511.6158579466.

The spelling of 133915853 in words is "one hundred thirty-three million, nine hundred fifteen thousand, eight hundred fifty-three".