1800849799 has 8 divisors (see below), whose sum is σ = 2124505088. Its totient is φ = 1493792280.

The previous prime is 1800849779. The next prime is 1800849823. The reversal of 1800849799 is 9979480081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1800849799 - 2⁵ = 1800849767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800849719) 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 in 7 ways as a sum of consecutive naturals, for example, 4149207 + ... + 4149640.

It is an arithmetic number, because the mean of its divisors is an integer number (265563136).

Almost surely, 2^1800849799 is an apocalyptic number.

1800849799 is a deficient number, since it is larger than the sum of its proper divisors (323655289).

1800849799 is an equidigital number, since it uses as much as digits as its factorization.

1800849799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8298885.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 1800849799 is about 42436.4206666868. The cubic root of 1800849799 is about 1216.6318004479.

The spelling of 1800849799 in words is "one billion, eight hundred million, eight hundred forty-nine thousand, seven hundred ninety-nine".