18475427057 has 2 divisors, whose sum is σ = 18475427058. Its totient is φ = 18475427056.

The previous prime is 18475427041. The next prime is 18475427063. The reversal of 18475427057 is 75072457481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16239934096 + 2235492961 = 127436^2 + 47281^2 .

It is a cyclic number.

It is not a de Polignac number, because 18475427057 - 2⁴ = 18475427041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18475426996 and 18475427014.

It is not a weakly prime, because it can be changed into another prime (18475427017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9237713528 + 9237713529.

It is an arithmetic number, because the mean of its divisors is an integer number (9237713529).

Almost surely, 2^18475427057 is an apocalyptic number.

It is an amenable number.

18475427057 is a deficient number, since it is larger than the sum of its proper divisors (1).

18475427057 is an equidigital number, since it uses as much as digits as its factorization.

18475427057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2195200, while the sum is 50.

The spelling of 18475427057 in words is "eighteen billion, four hundred seventy-five million, four hundred twenty-seven thousand, fifty-seven".