1990895441 has 2 divisors, whose sum is σ = 1990895442. Its totient is φ = 1990895440.

The previous prime is 1990895429. The next prime is 1990895453. The reversal of 1990895441 is 1445980991.

It is a balanced prime because it is at equal distance from previous prime (1990895429) and next prime (1990895453).

It can be written as a sum of positive squares in only one way, i.e., 1203812416 + 787083025 = 34696^2 + 28055^2 .

It is a cyclic number.

It is not a de Polignac number, because 1990895441 - 2⁶ = 1990895377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1990895441.

It is not a weakly prime, because it can be changed into another prime (1990895461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 995447720 + 995447721.

It is an arithmetic number, because the mean of its divisors is an integer number (995447721).

Almost surely, 2^1990895441 is an apocalyptic number.

It is an amenable number.

1990895441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1990895441 is an equidigital number, since it uses as much as digits as its factorization.

1990895441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 50.

The square root of 1990895441 is about 44619.4513749329. The cubic root of 1990895441 is about 1258.0063038736.

The spelling of 1990895441 in words is "one billion, nine hundred ninety million, eight hundred ninety-five thousand, four hundred forty-one".