1798169 has 4 divisors (see below), whose sum is σ = 1814196. Its totient is φ = 1782144.

The previous prime is 1798157. The next prime is 1798171. The reversal of 1798169 is 9618971.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9618971 = 43 ⋅223697.

It can be written as a sum of positive squares in 2 ways, for example, as 620944 + 1177225 = 788^2 + 1085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1798169 is a prime.

It is a super-3 number, since 3×1798169³ = 17442662333072582427, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (1798109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7844 + ... + 8069.

It is an arithmetic number, because the mean of its divisors is an integer number (453549).

2^1798169 is an apocalyptic number.

It is an amenable number.

1798169 is a deficient number, since it is larger than the sum of its proper divisors (16027).

1798169 is a wasteful number, since it uses less digits than its factorization.

1798169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16026.

The product of its digits is 27216, while the sum is 41.

The square root of 1798169 is about 1340.9582394691. The cubic root of 1798169 is about 121.6027795778.

The spelling of 1798169 in words is "one million, seven hundred ninety-eight thousand, one hundred sixty-nine".