1890435827201 has 2 divisors, whose sum is σ = 1890435827202. Its totient is φ = 1890435827200.

The previous prime is 1890435827167. The next prime is 1890435827237. The reversal of 1890435827201 is 1027285340981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1145927430400 + 744508396801 = 1070480^2 + 862849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1890435827201 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1890435827201.

It is not a weakly prime, because it can be changed into another prime (1890435827701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 945217913600 + 945217913601.

It is an arithmetic number, because the mean of its divisors is an integer number (945217913601).

Almost surely, 2^{1890435827201} is an apocalyptic number.

It is an amenable number.

1890435827201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1890435827201 is an equidigital number, since it uses as much as digits as its factorization.

1890435827201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 1890435827201 in words is "one trillion, eight hundred ninety billion, four hundred thirty-five million, eight hundred twenty-seven thousand, two hundred one".