1002189 has 8 divisors (see below), whose sum is σ = 1344672. Its totient is φ = 663920.

The previous prime is 1002173. The next prime is 1002191. The reversal of 1002189 is 9812001.

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

It is a cyclic number.

It is not a de Polignac number, because 1002189 - 2⁴ = 1002173 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447 + ... + 1484.

It is an arithmetic number, because the mean of its divisors is an integer number (168084).

2^1002189 is an apocalyptic number.

It is an amenable number.

1002189 is a deficient number, since it is larger than the sum of its proper divisors (342483).

1002189 is a wasteful number, since it uses less digits than its factorization.

1002189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 1002189 is about 1001.0939016895. The cubic root of 1002189 is about 100.0729134900.

The spelling of 1002189 in words is "one million, two thousand, one hundred eighty-nine".