188925031 has 2 divisors, whose sum is σ = 188925032. Its totient is φ = 188925030.

The previous prime is 188925001. The next prime is 188925041. The reversal of 188925031 is 130529881.

It is a strong prime.

It is an emirp because it is prime and its reverse (130529881) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188925031 is a prime.

It is a super-2 number, since 2×188925031² = 71385334676701922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188925001) 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, 94462515 + 94462516.

It is an arithmetic number, because the mean of its divisors is an integer number (94462516).

Almost surely, 2^188925031 is an apocalyptic number.

188925031 is a deficient number, since it is larger than the sum of its proper divisors (1).

188925031 is an equidigital number, since it uses as much as digits as its factorization.

188925031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 188925031 is about 13745.0002182612. Note that the first 3 decimals coincide. The cubic root of 188925031 is about 573.8034662054.

The spelling of 188925031 in words is "one hundred eighty-eight million, nine hundred twenty-five thousand, thirty-one".