1185655253 has 2 divisors, whose sum is σ = 1185655254. Its totient is φ = 1185655252.

The previous prime is 1185655223. The next prime is 1185655279. The reversal of 1185655253 is 3525565811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 609991204 + 575664049 = 24698^2 + 23993^2 .

It is a cyclic number.

It is not a de Polignac number, because 1185655253 - 2¹² = 1185651157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1185655253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1185655213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 592827626 + 592827627.

It is an arithmetic number, because the mean of its divisors is an integer number (592827627).

Almost surely, 2^1185655253 is an apocalyptic number.

It is an amenable number.

1185655253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1185655253 is an equidigital number, since it uses as much as digits as its factorization.

1185655253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180000, while the sum is 41.

The square root of 1185655253 is about 34433.3450742155. The cubic root of 1185655253 is about 1058.4072593878.

The spelling of 1185655253 in words is "one billion, one hundred eighty-five million, six hundred fifty-five thousand, two hundred fifty-three".