1945958461 has 2 divisors, whose sum is σ = 1945958462. Its totient is φ = 1945958460.

The previous prime is 1945958459. The next prime is 1945958467. The reversal of 1945958461 is 1648595491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1893120100 + 52838361 = 43510^2 + 7269^2 .

It is an emirp because it is prime and its reverse (1648595491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1945958461 - 2¹ = 1945958459 is a prime.

Together with 1945958459, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1945958399 and 1945958408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1945958467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972979230 + 972979231.

It is an arithmetic number, because the mean of its divisors is an integer number (972979231).

Almost surely, 2^1945958461 is an apocalyptic number.

It is an amenable number.

1945958461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1945958461 is an equidigital number, since it uses as much as digits as its factorization.

1945958461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 52.

The square root of 1945958461 is about 44113.0191780159. The cubic root of 1945958461 is about 1248.4692645911.

The spelling of 1945958461 in words is "one billion, nine hundred forty-five million, nine hundred fifty-eight thousand, four hundred sixty-one".