1229168887 has 2 divisors, whose sum is σ = 1229168888. Its totient is φ = 1229168886.

The previous prime is 1229168873. The next prime is 1229168891. The reversal of 1229168887 is 7888619221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1229168887 - 2¹⁵ = 1229136119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1229108887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614584443 + 614584444.

It is an arithmetic number, because the mean of its divisors is an integer number (614584444).

Almost surely, 2^1229168887 is an apocalyptic number.

1229168887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229168887 is an equidigital number, since it uses as much as digits as its factorization.

1229168887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 52.

The square root of 1229168887 is about 35059.5049451643. The cubic root of 1229168887 is about 1071.1998904465.

The spelling of 1229168887 in words is "one billion, two hundred twenty-nine million, one hundred sixty-eight thousand, eight hundred eighty-seven".