188354821337 has 2 divisors, whose sum is σ = 188354821338. Its totient is φ = 188354821336.

The previous prime is 188354821289. The next prime is 188354821423. The reversal of 188354821337 is 733128453881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149104871881 + 39249949456 = 386141^2 + 198116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188354821337 is a prime.

It is not a weakly prime, because it can be changed into another prime (188354821637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94177410668 + 94177410669.

It is an arithmetic number, because the mean of its divisors is an integer number (94177410669).

Almost surely, 2^188354821337 is an apocalyptic number.

It is an amenable number.

188354821337 is a deficient number, since it is larger than the sum of its proper divisors (1).

188354821337 is an equidigital number, since it uses as much as digits as its factorization.

188354821337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3870720, while the sum is 53.

The spelling of 188354821337 in words is "one hundred eighty-eight billion, three hundred fifty-four million, eight hundred twenty-one thousand, three hundred thirty-seven".