1798145 has 8 divisors (see below), whose sum is σ = 2232360. Its totient is φ = 1388800.

The previous prime is 1798133. The next prime is 1798151. The reversal of 1798145 is 5418971.

It can be written as a sum of positive squares in 4 ways, for example, as 128881 + 1669264 = 359^2 + 1292^2 .

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

It is not a de Polignac number, because 1798145 - 2⁴ = 1798129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6056 + ... + 6345.

It is an arithmetic number, because the mean of its divisors is an integer number (279045).

It is a Proth number, since it is equal to 439 ⋅ 2¹² + 1 and 439 < 2¹².

2^1798145 is an apocalyptic number.

It is an amenable number.

1798145 is a deficient number, since it is larger than the sum of its proper divisors (434215).

1798145 is a wasteful number, since it uses less digits than its factorization.

1798145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12435.

The product of its digits is 10080, while the sum is 35.

The square root of 1798145 is about 1340.9492906147. The cubic root of 1798145 is about 121.6022385683.

The spelling of 1798145 in words is "one million, seven hundred ninety-eight thousand, one hundred forty-five".