188025493 has 2 divisors, whose sum is σ = 188025494. Its totient is φ = 188025492.

The previous prime is 188025469. The next prime is 188025499. The reversal of 188025493 is 394520881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161213809 + 26811684 = 12697^2 + 5178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188025493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188025499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94012746 + 94012747.

It is an arithmetic number, because the mean of its divisors is an integer number (94012747).

Almost surely, 2^188025493 is an apocalyptic number.

It is an amenable number.

188025493 is a deficient number, since it is larger than the sum of its proper divisors (1).

188025493 is an equidigital number, since it uses as much as digits as its factorization.

188025493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 188025493 is about 13712.2388033464. The cubic root of 188025493 is about 572.8913241486.

The spelling of 188025493 in words is "one hundred eighty-eight million, twenty-five thousand, four hundred ninety-three".