188852391289 has 2 divisors, whose sum is σ = 188852391290. Its totient is φ = 188852391288.

The previous prime is 188852391229. The next prime is 188852391341. The reversal of 188852391289 is 982193258881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148317414400 + 40534976889 = 385120^2 + 201333^2 .

It is a cyclic number.

It is not a de Polignac number, because 188852391289 - 2³³ = 180262456697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 188852391289.

It is not a weakly prime, because it can be changed into another prime (188852391229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94426195644 + 94426195645.

It is an arithmetic number, because the mean of its divisors is an integer number (94426195645).

Almost surely, 2^188852391289 is an apocalyptic number.

It is an amenable number.

188852391289 is a deficient number, since it is larger than the sum of its proper divisors (1).

188852391289 is an equidigital number, since it uses as much as digits as its factorization.

188852391289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19906560, while the sum is 64.

The spelling of 188852391289 in words is "one hundred eighty-eight billion, eight hundred fifty-two million, three hundred ninety-one thousand, two hundred eighty-nine".