1547229473 has 2 divisors, whose sum is σ = 1547229474. Its totient is φ = 1547229472.

The previous prime is 1547229421. The next prime is 1547229521. The reversal of 1547229473 is 3749227451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1356596224 + 190633249 = 36832^2 + 13807^2 .

It is a cyclic number.

It is not a de Polignac number, because 1547229473 - 2¹² = 1547225377 is a prime.

It is not a weakly prime, because it can be changed into another prime (1547222473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 773614736 + 773614737.

It is an arithmetic number, because the mean of its divisors is an integer number (773614737).

Almost surely, 2^1547229473 is an apocalyptic number.

It is an amenable number.

1547229473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1547229473 is an equidigital number, since it uses as much as digits as its factorization.

1547229473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 44.

The square root of 1547229473 is about 39334.8379048395. The cubic root of 1547229473 is about 1156.6045857584.

The spelling of 1547229473 in words is "one billion, five hundred forty-seven million, two hundred twenty-nine thousand, four hundred seventy-three".