18475369417 has 2 divisors, whose sum is σ = 18475369418. Its totient is φ = 18475369416.

The previous prime is 18475369403. The next prime is 18475369537. The reversal of 18475369417 is 71496357481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17753963536 + 721405881 = 133244^2 + 26859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18475369417 is a prime.

It is not a weakly prime, because it can be changed into another prime (18475369217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9237684708 + 9237684709.

It is an arithmetic number, because the mean of its divisors is an integer number (9237684709).

Almost surely, 2^18475369417 is an apocalyptic number.

It is an amenable number.

18475369417 is a deficient number, since it is larger than the sum of its proper divisors (1).

18475369417 is an equidigital number, since it uses as much as digits as its factorization.

18475369417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 55.

The spelling of 18475369417 in words is "eighteen billion, four hundred seventy-five million, three hundred sixty-nine thousand, four hundred seventeen".