1681030 has 32 divisors (see below), whose sum is σ = 3324384. Its totient is φ = 608256.

The previous prime is 1681027. The next prime is 1681033. The reversal of 1681030 is 301861.

It is an interprime number because it is at equal distance from previous prime (1681027) and next prime (1681033).

It is a junction number, because it is equal to n+sod(n) for n = 1680989 and 1681007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681033) 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, 8614 + ... + 8806.

It is an arithmetic number, because the mean of its divisors is an integer number (103887).

2^1681030 is an apocalyptic number.

1681030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1681030 is a deficient number, since it is larger than the sum of its proper divisors (1643354).

1681030 is a wasteful number, since it uses less digits than its factorization.

1681030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1681030 is about 1296.5454099259. The cubic root of 1681030 is about 118.9027286936.

Adding to 1681030 its reverse (301861), we get a palindrome (1982891).

The spelling of 1681030 in words is "one million, six hundred eighty-one thousand, thirty".