188524451009 has 2 divisors, whose sum is σ = 188524451010. Its totient is φ = 188524451008.

The previous prime is 188524450987. The next prime is 188524451033. The reversal of 188524451009 is 900154425881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187183426609 + 1341024400 = 432647^2 + 36620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188524451009 is a prime.

It is a super-2 number, since 2×188524451009² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (188524454009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94262225504 + 94262225505.

It is an arithmetic number, because the mean of its divisors is an integer number (94262225505).

Almost surely, 2^188524451009 is an apocalyptic number.

It is an amenable number.

188524451009 is a deficient number, since it is larger than the sum of its proper divisors (1).

188524451009 is an equidigital number, since it uses as much as digits as its factorization.

188524451009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460800, while the sum is 47.

The spelling of 188524451009 in words is "one hundred eighty-eight billion, five hundred twenty-four million, four hundred fifty-one thousand, nine".