1798965 has 24 divisors (see below), whose sum is σ = 3564288. Its totient is φ = 822240.

The previous prime is 1798963. The next prime is 1798967. The reversal of 1798965 is 5698971.

It is an interprime number because it is at equal distance from previous prime (1798963) and next prime (1798967).

It is not a de Polignac number, because 1798965 - 2¹ = 1798963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1798965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1798963) 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 23 ways as a sum of consecutive naturals, for example, 2541 + ... + 3170.

It is an arithmetic number, because the mean of its divisors is an integer number (148512).

2^1798965 is an apocalyptic number.

1798965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1798965 is a deficient number, since it is larger than the sum of its proper divisors (1765323).

1798965 is a wasteful number, since it uses less digits than its factorization.

1798965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5729 (or 5726 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 1798965 is about 1341.2550093103. The cubic root of 1798965 is about 121.6207203337.

The spelling of 1798965 in words is "one million, seven hundred ninety-eight thousand, nine hundred sixty-five".