1798491 has 8 divisors (see below), whose sum is σ = 2404864. Its totient is φ = 1195560.

The previous prime is 1798487. The next prime is 1798519. The reversal of 1798491 is 1948971.

It is a happy number.

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

It is not a de Polignac number, because 1798491 - 2² = 1798487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1798421) 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 in 7 ways as a sum of consecutive naturals, for example, 846 + ... + 2076.

It is an arithmetic number, because the mean of its divisors is an integer number (300608).

2^1798491 is an apocalyptic number.

1798491 is a deficient number, since it is larger than the sum of its proper divisors (606373).

1798491 is a wasteful number, since it uses less digits than its factorization.

1798491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721.

The product of its digits is 18144, while the sum is 39.

The square root of 1798491 is about 1341.0782974905. The cubic root of 1798491 is about 121.6100376568.

The spelling of 1798491 in words is "one million, seven hundred ninety-eight thousand, four hundred ninety-one".