1641189 has 16 divisors (see below), whose sum is σ = 2447424. Its totient is φ = 969600.

The previous prime is 1641161. The next prime is 1641217. The reversal of 1641189 is 9811461.

It is an interprime number because it is at equal distance from previous prime (1641161) and next prime (1641217).

It is not a de Polignac number, because 1641189 - 2⁹ = 1640677 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747 + ... + 1959.

It is an arithmetic number, because the mean of its divisors is an integer number (152964).

2^1641189 is an apocalyptic number.

It is an amenable number.

1641189 is a deficient number, since it is larger than the sum of its proper divisors (806235).

1641189 is a wasteful number, since it uses less digits than its factorization.

1641189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268.

The product of its digits is 1728, while the sum is 30.

The square root of 1641189 is about 1281.0889898832. The cubic root of 1641189 is about 117.9558630295.

It can be divided in two parts, 1641 and 189, that added together give a triangular number (1830 = T₆₀).

The spelling of 1641189 in words is "one million, six hundred forty-one thousand, one hundred eighty-nine".