319951468189 has 2 divisors, whose sum is σ = 319951468190. Its totient is φ = 319951468188.

The previous prime is 319951468171. The next prime is 319951468253. The reversal of 319951468189 is 981864159913.

It is an a-pointer prime, because the next prime (319951468253) can be obtained adding 319951468189 to its sum of digits (64).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299635812100 + 20315656089 = 547390^2 + 142533^2 .

It is a cyclic number.

It is not a de Polignac number, because 319951468189 - 2²³ = 319943079581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 319951468189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (319951468139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159975734094 + 159975734095.

It is an arithmetic number, because the mean of its divisors is an integer number (159975734095).

Almost surely, 2^319951468189 is an apocalyptic number.

It is an amenable number.

319951468189 is a deficient number, since it is larger than the sum of its proper divisors (1).

319951468189 is an equidigital number, since it uses as much as digits as its factorization.

319951468189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16796160, while the sum is 64.

It can be divided in two parts, 319951 and 468189, that added together give a triangular number (788140 = T₁₂₅₅).

The spelling of 319951468189 in words is "three hundred nineteen billion, nine hundred fifty-one million, four hundred sixty-eight thousand, one hundred eighty-nine".