188781051253 has 2 divisors, whose sum is σ = 188781051254. Its totient is φ = 188781051252.

The previous prime is 188781051233. The next prime is 188781051269. The reversal of 188781051253 is 352150187881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132468337444 + 56312713809 = 363962^2 + 237303^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188781051253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 188781051197 and 188781051206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188781051233) 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, 94390525626 + 94390525627.

It is an arithmetic number, because the mean of its divisors is an integer number (94390525627).

Almost surely, 2^188781051253 is an apocalyptic number.

It is an amenable number.

188781051253 is a deficient number, since it is larger than the sum of its proper divisors (1).

188781051253 is an equidigital number, since it uses as much as digits as its factorization.

188781051253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 537600, while the sum is 49.

The spelling of 188781051253 in words is "one hundred eighty-eight billion, seven hundred eighty-one million, fifty-one thousand, two hundred fifty-three".