189626971 has 2 divisors, whose sum is σ = 189626972. Its totient is φ = 189626970.

The previous prime is 189626953. The next prime is 189626989. The reversal of 189626971 is 179626981.

It is a balanced prime because it is at equal distance from previous prime (189626953) and next prime (189626989).

It is a cyclic number.

It is not a de Polignac number, because 189626971 - 2¹⁵ = 189594203 is a prime.

It is not a weakly prime, because it can be changed into another prime (189626471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94813485 + 94813486.

It is an arithmetic number, because the mean of its divisors is an integer number (94813486).

Almost surely, 2^189626971 is an apocalyptic number.

189626971 is a deficient number, since it is larger than the sum of its proper divisors (1).

189626971 is an equidigital number, since it uses as much as digits as its factorization.

189626971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 49.

The square root of 189626971 is about 13770.5109200785. The cubic root of 189626971 is about 574.5132324025.

The spelling of 189626971 in words is "one hundred eighty-nine million, six hundred twenty-six thousand, nine hundred seventy-one".