18475427017 has 2 divisors, whose sum is σ = 18475427018. Its totient is φ = 18475427016.

The previous prime is 18475426973. The next prime is 18475427023. The reversal of 18475427017 is 71072457481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15470633161 + 3004793856 = 124381^2 + 54816^2 .

It is a cyclic number.

It is not a de Polignac number, because 18475427017 - 2¹¹ = 18475424969 is a prime.

It is not a weakly prime, because it can be changed into another prime (18475427057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9237713508 + 9237713509.

It is an arithmetic number, because the mean of its divisors is an integer number (9237713509).

Almost surely, 2^18475427017 is an apocalyptic number.

It is an amenable number.

18475427017 is a deficient number, since it is larger than the sum of its proper divisors (1).

18475427017 is an equidigital number, since it uses as much as digits as its factorization.

18475427017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 439040, while the sum is 46.

The spelling of 18475427017 in words is "eighteen billion, four hundred seventy-five million, four hundred twenty-seven thousand, seventeen".