1798190849 has 32 divisors (see below), whose sum is σ = 2328480000. Its totient is φ = 1350284544.

The previous prime is 1798190839. The next prime is 1798190869. The reversal of 1798190849 is 9480918971.

It is not a de Polignac number, because 1798190849 - 2⁸ = 1798190593 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1798190794 and 1798190803.

It is not an unprimeable number, because it can be changed into a prime (1798190819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149927 + ... + 161475.

It is an arithmetic number, because the mean of its divisors is an integer number (72765000).

Almost surely, 2^1798190849 is an apocalyptic number.

It is an amenable number.

1798190849 is a deficient number, since it is larger than the sum of its proper divisors (530289151).

1798190849 is a wasteful number, since it uses less digits than its factorization.

1798190849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11657.

The product of its (nonzero) digits is 1306368, while the sum is 56.

The square root of 1798190849 is about 42405.0804621333. The cubic root of 1798190849 is about 1216.0327209516.

The spelling of 1798190849 in words is "one billion, seven hundred ninety-eight million, one hundred ninety thousand, eight hundred forty-nine".