1681835201 has 2 divisors, whose sum is σ = 1681835202. Its totient is φ = 1681835200.

The previous prime is 1681835147. The next prime is 1681835269. The reversal of 1681835201 is 1025381861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1198890625 + 482944576 = 34625^2 + 21976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1681835201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1681805201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840917600 + 840917601.

It is an arithmetic number, because the mean of its divisors is an integer number (840917601).

Almost surely, 2^1681835201 is an apocalyptic number.

It is an amenable number.

1681835201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1681835201 is an equidigital number, since it uses as much as digits as its factorization.

1681835201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1681835201 is about 41010.1841132175. The cubic root of 1681835201 is about 1189.2171017397.

The spelling of 1681835201 in words is "one billion, six hundred eighty-one million, eight hundred thirty-five thousand, two hundred one".