319849451 has 2 divisors, whose sum is σ = 319849452. Its totient is φ = 319849450.

The previous prime is 319849447. The next prime is 319849457. The reversal of 319849451 is 154948913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 319849451 - 2² = 319849447 is a prime.

It is not a weakly prime, because it can be changed into another prime (319849457) 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, 159924725 + 159924726.

It is an arithmetic number, because the mean of its divisors is an integer number (159924726).

Almost surely, 2^319849451 is an apocalyptic number.

319849451 is a deficient number, since it is larger than the sum of its proper divisors (1).

319849451 is an equidigital number, since it uses as much as digits as its factorization.

319849451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 44.

The square root of 319849451 is about 17884.3353524810. The cubic root of 319849451 is about 683.8830971912.

The spelling of 319849451 in words is "three hundred nineteen million, eight hundred forty-nine thousand, four hundred fifty-one".