1266541303 has 2 divisors, whose sum is σ = 1266541304. Its totient is φ = 1266541302.

The previous prime is 1266541249. The next prime is 1266541321. The reversal of 1266541303 is 3031456621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1266541303 - 2¹⁷ = 1266410231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266541333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633270651 + 633270652.

It is an arithmetic number, because the mean of its divisors is an integer number (633270652).

Almost surely, 2^1266541303 is an apocalyptic number.

1266541303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266541303 is an equidigital number, since it uses as much as digits as its factorization.

1266541303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1266541303 is about 35588.4995890526. The cubic root of 1266541303 is about 1081.9481592236.

Adding to 1266541303 its reverse (3031456621), we get a palindrome (4297997924).

The spelling of 1266541303 in words is "one billion, two hundred sixty-six million, five hundred forty-one thousand, three hundred three".