1681834541 has 2 divisors, whose sum is σ = 1681834542. Its totient is φ = 1681834540.

The previous prime is 1681834493. The next prime is 1681834547. The reversal of 1681834541 is 1454381861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 926958916 + 754875625 = 30446^2 + 27475^2 .

It is a cyclic number.

It is not a de Polignac number, because 1681834541 - 2¹⁸ = 1681572397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1681834547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840917270 + 840917271.

It is an arithmetic number, because the mean of its divisors is an integer number (840917271).

Almost surely, 2^1681834541 is an apocalyptic number.

It is an amenable number.

1681834541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1681834541 is an equidigital number, since it uses as much as digits as its factorization.

1681834541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 41.

The square root of 1681834541 is about 41010.1760664350. The cubic root of 1681834541 is about 1189.2169461788.

The spelling of 1681834541 in words is "one billion, six hundred eighty-one million, eight hundred thirty-four thousand, five hundred forty-one".