185507190047 has 2 divisors, whose sum is σ = 185507190048. Its totient is φ = 185507190046.

The previous prime is 185507190017. The next prime is 185507190091. The reversal of 185507190047 is 740091705581.

185507190047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-185507190047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 185507189983 and 185507190010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (185507190017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92753595023 + 92753595024.

It is an arithmetic number, because the mean of its divisors is an integer number (92753595024).

Almost surely, 2^185507190047 is an apocalyptic number.

185507190047 is a deficient number, since it is larger than the sum of its proper divisors (1).

185507190047 is an equidigital number, since it uses as much as digits as its factorization.

185507190047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 47.

The spelling of 185507190047 in words is "one hundred eighty-five billion, five hundred seven million, one hundred ninety thousand, forty-seven".