1641258 has 24 divisors (see below), whose sum is σ = 3744000. Its totient is φ = 518184.

The previous prime is 1641253. The next prime is 1641281. The reversal of 1641258 is 8521461.

It is not an unprimeable number, because it can be changed into a prime (1641253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2058 + ... + 2741.

It is an arithmetic number, because the mean of its divisors is an integer number (156000).

2^1641258 is an apocalyptic number.

1641258 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1641258 is an abundant number, since it is smaller than the sum of its proper divisors (2102742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1641258 is a wasteful number, since it uses less digits than its factorization.

1641258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4826 (or 4823 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 1641258 is about 1281.1159198137. The cubic root of 1641258 is about 117.9575160669.

The spelling of 1641258 in words is "one million, six hundred forty-one thousand, two hundred fifty-eight".