951968189 has 2 divisors, whose sum is σ = 951968190. Its totient is φ = 951968188.

The previous prime is 951968167. The next prime is 951968197. The reversal of 951968189 is 981869159.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 846228100 + 105740089 = 29090^2 + 10283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-951968189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (951938189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 475984094 + 475984095.

It is an arithmetic number, because the mean of its divisors is an integer number (475984095).

Almost surely, 2^951968189 is an apocalyptic number.

It is an amenable number.

951968189 is a deficient number, since it is larger than the sum of its proper divisors (1).

951968189 is an equidigital number, since it uses as much as digits as its factorization.

951968189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 56.

The square root of 951968189 is about 30853.9817365604. The cubic root of 951968189 is about 983.7259896072.

The spelling of 951968189 in words is "nine hundred fifty-one million, nine hundred sixty-eight thousand, one hundred eighty-nine".