1026189 has 24 divisors (see below), whose sum is σ = 1589952. Its totient is φ = 660960.

The previous prime is 1026167. The next prime is 1026197. The reversal of 1026189 is 9816201.

It is not a de Polignac number, because 1026189 - 2⁷ = 1026061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

1026189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9912 + ... + 10014.

It is an arithmetic number, because the mean of its divisors is an integer number (66248).

2^1026189 is an apocalyptic number.

It is an amenable number.

1026189 is a deficient number, since it is larger than the sum of its proper divisors (563763).

1026189 is an equidigital number, since it uses as much as digits as its factorization.

1026189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1026189 is about 1013.0098716202. The cubic root of 1026189 is about 100.8654549363.

The spelling of 1026189 in words is "one million, twenty-six thousand, one hundred eighty-nine".