1299107189 has 2 divisors, whose sum is σ = 1299107190. Its totient is φ = 1299107188.

The previous prime is 1299107177. The next prime is 1299107237. The reversal of 1299107189 is 9817019921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1273776100 + 25331089 = 35690^2 + 5033^2 .

It is a cyclic number.

It is not a de Polignac number, because 1299107189 - 2⁸ = 1299106933 is a prime.

It is a super-2 number, since 2×1299107189² = 3375358977022963442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1299107149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649553594 + 649553595.

It is an arithmetic number, because the mean of its divisors is an integer number (649553595).

Almost surely, 2^1299107189 is an apocalyptic number.

It is an amenable number.

1299107189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299107189 is an equidigital number, since it uses as much as digits as its factorization.

1299107189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 47.

The square root of 1299107189 is about 36043.1295672282. The cubic root of 1299107189 is about 1091.1429777474.

The spelling of 1299107189 in words is "one billion, two hundred ninety-nine million, one hundred seven thousand, one hundred eighty-nine".