1961882441 has 2 divisors, whose sum is σ = 1961882442. Its totient is φ = 1961882440.

The previous prime is 1961882381. The next prime is 1961882459. The reversal of 1961882441 is 1442881691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050084025 + 911798416 = 32405^2 + 30196^2 .

It is a cyclic number.

It is not a de Polignac number, because 1961882441 - 2¹⁰ = 1961881417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1961882392 and 1961882401.

It is not a weakly prime, because it can be changed into another prime (1961882471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980941220 + 980941221.

It is an arithmetic number, because the mean of its divisors is an integer number (980941221).

Almost surely, 2^1961882441 is an apocalyptic number.

It is an amenable number.

1961882441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1961882441 is an equidigital number, since it uses as much as digits as its factorization.

1961882441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 44.

The square root of 1961882441 is about 44293.1421441288. The cubic root of 1961882441 is about 1251.8654687163.

The spelling of 1961882441 in words is "one billion, nine hundred sixty-one million, eight hundred eighty-two thousand, four hundred forty-one".