18470873 has 2 divisors, whose sum is σ = 18470874. Its totient is φ = 18470872.

The previous prime is 18470843. The next prime is 18470923. The reversal of 18470873 is 37807481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12054784 + 6416089 = 3472^2 + 2533^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18470873 is a prime.

It is not a weakly prime, because it can be changed into another prime (18470833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9235436 + 9235437.

It is an arithmetic number, because the mean of its divisors is an integer number (9235437).

Almost surely, 2^18470873 is an apocalyptic number.

It is an amenable number.

18470873 is a deficient number, since it is larger than the sum of its proper divisors (1).

18470873 is an equidigital number, since it uses as much as digits as its factorization.

18470873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 18470873 is about 4297.7753547620. The cubic root of 18470873 is about 264.3397494856.

The spelling of 18470873 in words is "eighteen million, four hundred seventy thousand, eight hundred seventy-three".