1671489 has 16 divisors (see below), whose sum is σ = 2557440. Its totient is φ = 1077840.

The previous prime is 1671463. The next prime is 1671493. The reversal of 1671489 is 9841761.

It is not a de Polignac number, because 1671489 - 2¹¹ = 1669441 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1671289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162 + ... + 1835.

It is an arithmetic number, because the mean of its divisors is an integer number (159840).

2^1671489 is an apocalyptic number.

It is an amenable number.

1671489 is a deficient number, since it is larger than the sum of its proper divisors (885951).

1671489 is a wasteful number, since it uses less digits than its factorization.

1671489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037 (or 2031 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 1671489 is about 1292.8607813682. The cubic root of 1671489 is about 118.6773502073.

The spelling of 1671489 in words is "one million, six hundred seventy-one thousand, four hundred eighty-nine".