1298189 has 4 divisors (see below), whose sum is σ = 1354656. Its totient is φ = 1241724.

The previous prime is 1298173. The next prime is 1298191. The reversal of 1298189 is 9818921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1298189 - 2⁴ = 1298173 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298119) 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, 28199 + ... + 28244.

It is an arithmetic number, because the mean of its divisors is an integer number (338664).

2^1298189 is an apocalyptic number.

It is an amenable number.

1298189 is a deficient number, since it is larger than the sum of its proper divisors (56467).

1298189 is an equidigital number, since it uses as much as digits as its factorization.

1298189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56466.

The product of its digits is 10368, while the sum is 38.

The square root of 1298189 is about 1139.3809722828. The cubic root of 1298189 is about 109.0885849463.

Subtracting from 1298189 its product of digits (10368), we obtain a palindrome (1287821).

The spelling of 1298189 in words is "one million, two hundred ninety-eight thousand, one hundred eighty-nine".