1181263 has 2 divisors, whose sum is σ = 1181264. Its totient is φ = 1181262.

The previous prime is 1181237. The next prime is 1181267. The reversal of 1181263 is 3621811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1181263 - 2¹⁷ = 1050191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1181267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590631 + 590632.

It is an arithmetic number, because the mean of its divisors is an integer number (590632).

2^1181263 is an apocalyptic number.

1181263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1181263 is an equidigital number, since it uses as much as digits as its factorization.

1181263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 22.

The square root of 1181263 is about 1086.8592365159. The cubic root of 1181263 is about 105.7098687674.

It can be divided in two parts, 1181 and 263, that added together give a square (1444 = 38²).

The spelling of 1181263 in words is "one million, one hundred eighty-one thousand, two hundred sixty-three".