319870849 has 2 divisors, whose sum is σ = 319870850. Its totient is φ = 319870848.

The previous prime is 319870813. The next prime is 319870879. The reversal of 319870849 is 948078913.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317980224 + 1890625 = 17832^2 + 1375^2 .

It is a cyclic number.

It is not a de Polignac number, because 319870849 - 2⁷ = 319870721 is a prime.

It is not a weakly prime, because it can be changed into another prime (319870879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159935424 + 159935425.

It is an arithmetic number, because the mean of its divisors is an integer number (159935425).

Almost surely, 2^319870849 is an apocalyptic number.

It is an amenable number.

319870849 is a deficient number, since it is larger than the sum of its proper divisors (1).

319870849 is an equidigital number, since it uses as much as digits as its factorization.

319870849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 319870849 is about 17884.9335754987. The cubic root of 319870849 is about 683.8983474953.

It can be divided in two parts, 3198 and 70849, that added together give a palindrome (74047).

The spelling of 319870849 in words is "three hundred nineteen million, eight hundred seventy thousand, eight hundred forty-nine".