1945434941 has 2 divisors, whose sum is σ = 1945434942. Its totient is φ = 1945434940.

The previous prime is 1945434929. The next prime is 1945434949. The reversal of 1945434941 is 1494345491.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1396516900 + 548918041 = 37370^2 + 23429^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1945434941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1945434892 and 1945434901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1945434949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972717470 + 972717471.

It is an arithmetic number, because the mean of its divisors is an integer number (972717471).

Almost surely, 2^1945434941 is an apocalyptic number.

It is an amenable number.

1945434941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1945434941 is an equidigital number, since it uses as much as digits as its factorization.

1945434941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 44.

The square root of 1945434941 is about 44107.0849297480. The cubic root of 1945434941 is about 1248.3572962452.

The spelling of 1945434941 in words is "one billion, nine hundred forty-five million, four hundred thirty-four thousand, nine hundred forty-one".