1181253413 has 2 divisors, whose sum is σ = 1181253414. Its totient is φ = 1181253412.

The previous prime is 1181253391. The next prime is 1181253421. The reversal of 1181253413 is 3143521811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1148328769 + 32924644 = 33887^2 + 5738^2 .

It is an emirp because it is prime and its reverse (3143521811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1181253413 - 2¹⁸ = 1180991269 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1181553413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590626706 + 590626707.

It is an arithmetic number, because the mean of its divisors is an integer number (590626707).

Almost surely, 2^1181253413 is an apocalyptic number.

It is an amenable number.

1181253413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1181253413 is an equidigital number, since it uses as much as digits as its factorization.

1181253413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 29.

The square root of 1181253413 is about 34369.3673639769. The cubic root of 1181253413 is about 1057.0958279011.

The spelling of 1181253413 in words is "one billion, one hundred eighty-one million, two hundred fifty-three thousand, four hundred thirteen".