1829681 has 8 divisors (see below), whose sum is σ = 2201280. Its totient is φ = 1485648.

The previous prime is 1829671. The next prime is 1829683. The reversal of 1829681 is 1869281.

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

It is not a de Polignac number, because 1829681 - 2⁶ = 1829617 is a prime.

It is a super-2 number, since 2×1829681² = 6695465123522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1829683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6746 + ... + 7011.

It is an arithmetic number, because the mean of its divisors is an integer number (275160).

2^1829681 is an apocalyptic number.

It is an amenable number.

1829681 is a deficient number, since it is larger than the sum of its proper divisors (371599).

1829681 is a wasteful number, since it uses less digits than its factorization.

1829681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13783.

The product of its digits is 6912, while the sum is 35.

The square root of 1829681 is about 1352.6570149155. The cubic root of 1829681 is about 122.3090123990.

The spelling of 1829681 in words is "one million, eight hundred twenty-nine thousand, six hundred eighty-one".