1215251183 has 2 divisors, whose sum is σ = 1215251184. Its totient is φ = 1215251182.

The previous prime is 1215251117. The next prime is 1215251197. The reversal of 1215251183 is 3811525121.

It is a strong prime.

It is an emirp because it is prime and its reverse (3811525121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1215251183 - 2¹⁰ = 1215250159 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215251113) 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, 607625591 + 607625592.

It is an arithmetic number, because the mean of its divisors is an integer number (607625592).

Almost surely, 2^1215251183 is an apocalyptic number.

1215251183 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215251183 is an equidigital number, since it uses as much as digits as its factorization.

1215251183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 29.

The square root of 1215251183 is about 34860.4529947618. The cubic root of 1215251183 is about 1067.1415197067.

It can be divided in two parts, 121525118 and 3, that added together give a palindrome (121525121).

The spelling of 1215251183 in words is "one billion, two hundred fifteen million, two hundred fifty-one thousand, one hundred eighty-three".