3638468473 has 2 divisors, whose sum is σ = 3638468474. Its totient is φ = 3638468472.

The previous prime is 3638468467. The next prime is 3638468489. The reversal of 3638468473 is 3748648363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2429306944 + 1209161529 = 49288^2 + 34773^2 .

It is an emirp because it is prime and its reverse (3748648363) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3638468473 - 2²⁵ = 3604914041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3638468473.

It is not a weakly prime, because it can be changed into another prime (3638463473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1819234236 + 1819234237.

It is an arithmetic number, because the mean of its divisors is an integer number (1819234237).

Almost surely, 2^3638468473 is an apocalyptic number.

It is an amenable number.

3638468473 is a deficient number, since it is larger than the sum of its proper divisors (1).

3638468473 is an equidigital number, since it uses as much as digits as its factorization.

3638468473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 52.

The square root of 3638468473 is about 60319.7187742118. The cubic root of 3638468473 is about 1538.0585633783.

The spelling of 3638468473 in words is "three billion, six hundred thirty-eight million, four hundred sixty-eight thousand, four hundred seventy-three".