1681029 has 12 divisors (see below), whose sum is σ = 2775136. Its totient is φ = 960552.

The previous prime is 1681027. The next prime is 1681033. The reversal of 1681029 is 9201861.

It is not a de Polignac number, because 1681029 - 2¹ = 1681027 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1680993 and 1681011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681027) 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, 13279 + ... + 13404.

2^1681029 is an apocalyptic number.

It is an amenable number.

1681029 is a deficient number, since it is larger than the sum of its proper divisors (1094107).

1681029 is a wasteful number, since it uses less digits than its factorization.

1681029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26696 (or 26693 counting only the distinct ones).

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

The square root of 1681029 is about 1296.5450242857. The cubic root of 1681029 is about 118.9027051163.

The spelling of 1681029 in words is "one million, six hundred eighty-one thousand, twenty-nine".