1800126799 has 2 divisors, whose sum is σ = 1800126800. Its totient is φ = 1800126798.

The previous prime is 1800126791. The next prime is 1800126803. The reversal of 1800126799 is 9976210081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1800126799 - 2³ = 1800126791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1800126791) 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, 900063399 + 900063400.

It is an arithmetic number, because the mean of its divisors is an integer number (900063400).

Almost surely, 2^1800126799 is an apocalyptic number.

1800126799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1800126799 is an equidigital number, since it uses as much as digits as its factorization.

1800126799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 1800126799 is about 42427.9011854228. The cubic root of 1800126799 is about 1216.4689620414.

The spelling of 1800126799 in words is "one billion, eight hundred million, one hundred twenty-six thousand, seven hundred ninety-nine".