1798366 has 4 divisors (see below), whose sum is σ = 2697552. Its totient is φ = 899182.

The previous prime is 1798351. The next prime is 1798367. The reversal of 1798366 is 6638971.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6638971 = 97 ⋅68443.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1798367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449590 + ... + 449593.

It is an arithmetic number, because the mean of its divisors is an integer number (674388).

2^1798366 is an apocalyptic number.

1798366 is a deficient number, since it is larger than the sum of its proper divisors (899186).

1798366 is an equidigital number, since it uses as much as digits as its factorization.

1798366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899185.

The product of its digits is 54432, while the sum is 40.

The square root of 1798366 is about 1341.0316923921. The cubic root of 1798366 is about 121.6072201824.

The spelling of 1798366 in words is "one million, seven hundred ninety-eight thousand, three hundred sixty-six".