188488980469 has 2 divisors, whose sum is σ = 188488980470. Its totient is φ = 188488980468.

The previous prime is 188488980461. The next prime is 188488980503. The reversal of 188488980469 is 964089884881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153683600625 + 34805379844 = 392025^2 + 186562^2 .

It is a cyclic number.

It is not a de Polignac number, because 188488980469 - 2³ = 188488980461 is a prime.

It is a super-2 number, since 2×188488980469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188488980461) 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, 94244490234 + 94244490235.

It is an arithmetic number, because the mean of its divisors is an integer number (94244490235).

Almost surely, 2^188488980469 is an apocalyptic number.

It is an amenable number.

188488980469 is a deficient number, since it is larger than the sum of its proper divisors (1).

188488980469 is an equidigital number, since it uses as much as digits as its factorization.

188488980469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254803968, while the sum is 73.

The spelling of 188488980469 in words is "one hundred eighty-eight billion, four hundred eighty-eight million, nine hundred eighty thousand, four hundred sixty-nine".