1930811473 has 2 divisors, whose sum is σ = 1930811474. Its totient is φ = 1930811472.

The previous prime is 1930811459. The next prime is 1930811537. The reversal of 1930811473 is 3741180391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1551808449 + 379003024 = 39393^2 + 19468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1930811473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1930811423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 965405736 + 965405737.

It is an arithmetic number, because the mean of its divisors is an integer number (965405737).

Almost surely, 2^1930811473 is an apocalyptic number.

It is an amenable number.

1930811473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1930811473 is an equidigital number, since it uses as much as digits as its factorization.

1930811473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1930811473 is about 43940.9999089688. Note that the first 4 decimals coincide. The cubic root of 1930811473 is about 1245.2215372182.

The spelling of 1930811473 in words is "one billion, nine hundred thirty million, eight hundred eleven thousand, four hundred seventy-three".