185285363873 has 2 divisors, whose sum is σ = 185285363874. Its totient is φ = 185285363872.

The previous prime is 185285363863. The next prime is 185285363917. The reversal of 185285363873 is 378363582581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154301267344 + 30984096529 = 392812^2 + 176023^2 .

It is a cyclic number.

It is not a de Polignac number, because 185285363873 - 2¹⁰ = 185285362849 is a prime.

It is not a weakly prime, because it can be changed into another prime (185285363863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92642681936 + 92642681937.

It is an arithmetic number, because the mean of its divisors is an integer number (92642681937).

Almost surely, 2^185285363873 is an apocalyptic number.

It is an amenable number.

185285363873 is a deficient number, since it is larger than the sum of its proper divisors (1).

185285363873 is an equidigital number, since it uses as much as digits as its factorization.

185285363873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29030400, while the sum is 59.

The spelling of 185285363873 in words is "one hundred eighty-five billion, two hundred eighty-five million, three hundred sixty-three thousand, eight hundred seventy-three".