1947434273 has 2 divisors, whose sum is σ = 1947434274. Its totient is φ = 1947434272.

The previous prime is 1947434243. The next prime is 1947434297. The reversal of 1947434273 is 3724347491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1545511969 + 401922304 = 39313^2 + 20048^2 .

It is a cyclic number.

It is not a de Polignac number, because 1947434273 - 2²⁸ = 1678998817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1947434233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973717136 + 973717137.

It is an arithmetic number, because the mean of its divisors is an integer number (973717137).

Almost surely, 2^1947434273 is an apocalyptic number.

It is an amenable number.

1947434273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1947434273 is an equidigital number, since it uses as much as digits as its factorization.

1947434273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 44.

The square root of 1947434273 is about 44129.7436317049. The cubic root of 1947434273 is about 1248.7847972486.

The spelling of 1947434273 in words is "one billion, nine hundred forty-seven million, four hundred thirty-four thousand, two hundred seventy-three".