80138473 has 2 divisors, whose sum is σ = 80138474. Its totient is φ = 80138472.

The previous prime is 80138449. The next prime is 80138489. The reversal of 80138473 is 37483108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80138304 + 169 = 8952^2 + 13^2 .

It is a cyclic number.

It is not a de Polignac number, because 80138473 - 2²¹ = 78041321 is a prime.

It is not a weakly prime, because it can be changed into another prime (80138423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40069236 + 40069237.

It is an arithmetic number, because the mean of its divisors is an integer number (40069237).

Almost surely, 2^80138473 is an apocalyptic number.

It is an amenable number.

80138473 is a deficient number, since it is larger than the sum of its proper divisors (1).

80138473 is an equidigital number, since it uses as much as digits as its factorization.

80138473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 80138473 is about 8952.0094392265. The cubic root of 80138473 is about 431.1354038996.

The spelling of 80138473 in words is "eighty million, one hundred thirty-eight thousand, four hundred seventy-three".