18285370529 has 2 divisors, whose sum is σ = 18285370530. Its totient is φ = 18285370528.

The previous prime is 18285370501. The next prime is 18285370531. The reversal of 18285370529 is 92507358281.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11695989904 + 6589380625 = 108148^2 + 81175^2 .

It is a cyclic number.

It is not a de Polignac number, because 18285370529 - 2³² = 13990403233 is a prime.

Together with 18285370531, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18285370559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9142685264 + 9142685265.

It is an arithmetic number, because the mean of its divisors is an integer number (9142685265).

Almost surely, 2^18285370529 is an apocalyptic number.

It is an amenable number.

18285370529 is a deficient number, since it is larger than the sum of its proper divisors (1).

18285370529 is an equidigital number, since it uses as much as digits as its factorization.

18285370529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 18285370529 in words is "eighteen billion, two hundred eighty-five million, three hundred seventy thousand, five hundred twenty-nine".