18585860851 has 2 divisors, whose sum is σ = 18585860852. Its totient is φ = 18585860850.

The previous prime is 18585860801. The next prime is 18585860863. The reversal of 18585860851 is 15806858581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18585860851 - 2¹¹ = 18585858803 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18585860792 and 18585860801.

It is not a weakly prime, because it can be changed into another prime (18585860801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9292930425 + 9292930426.

It is an arithmetic number, because the mean of its divisors is an integer number (9292930426).

Almost surely, 2^18585860851 is an apocalyptic number.

18585860851 is a deficient number, since it is larger than the sum of its proper divisors (1).

18585860851 is an equidigital number, since it uses as much as digits as its factorization.

18585860851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072000, while the sum is 55.

The spelling of 18585860851 in words is "eighteen billion, five hundred eighty-five million, eight hundred sixty thousand, eight hundred fifty-one".