1798147799 has 4 divisors (see below), whose sum is σ = 2055026064. Its totient is φ = 1541269536.

The previous prime is 1798147781. The next prime is 1798147811. The reversal of 1798147799 is 9977418971.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1798147799 - 2¹⁶ = 1798082263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1798147399) 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 in 3 ways as a sum of consecutive naturals, for example, 128439122 + ... + 128439135.

It is an arithmetic number, because the mean of its divisors is an integer number (513756516).

Almost surely, 2^1798147799 is an apocalyptic number.

1798147799 is a deficient number, since it is larger than the sum of its proper divisors (256878265).

1798147799 is an equidigital number, since it uses as much as digits as its factorization.

1798147799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256878264.

The product of its digits is 8001504, while the sum is 62.

The square root of 1798147799 is about 42404.5728548231. The cubic root of 1798147799 is about 1216.0230166375.

The spelling of 1798147799 in words is "one billion, seven hundred ninety-eight million, one hundred forty-seven thousand, seven hundred ninety-nine".