188901017 has 2 divisors, whose sum is σ = 188901018. Its totient is φ = 188901016.

The previous prime is 188900993. The next prime is 188901019. The reversal of 188901017 is 710109881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188897536 + 3481 = 13744^2 + 59^2 .

It is a cyclic number.

It is not a de Polignac number, because 188901017 - 2¹⁸ = 188638873 is a prime.

Together with 188901019, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (188901019) 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, 94450508 + 94450509.

It is an arithmetic number, because the mean of its divisors is an integer number (94450509).

Almost surely, 2^188901017 is an apocalyptic number.

It is an amenable number.

188901017 is a deficient number, since it is larger than the sum of its proper divisors (1).

188901017 is an equidigital number, since it uses as much as digits as its factorization.

188901017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 35.

The square root of 188901017 is about 13744.1266364946. The cubic root of 188901017 is about 573.7791533863.

The spelling of 188901017 in words is "one hundred eighty-eight million, nine hundred one thousand, seventeen".