319548689 has 2 divisors, whose sum is σ = 319548690. Its totient is φ = 319548688.

The previous prime is 319548659. The next prime is 319548701. The reversal of 319548689 is 986845913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280897600 + 38651089 = 16760^2 + 6217^2 .

It is a cyclic number.

It is not a de Polignac number, because 319548689 - 2¹² = 319544593 is a prime.

It is a super-2 number, since 2×319548689² = 204222729283237442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 319548689.

It is not a weakly prime, because it can be changed into another prime (319548659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159774344 + 159774345.

It is an arithmetic number, because the mean of its divisors is an integer number (159774345).

Almost surely, 2^319548689 is an apocalyptic number.

It is an amenable number.

319548689 is a deficient number, since it is larger than the sum of its proper divisors (1).

319548689 is an equidigital number, since it uses as much as digits as its factorization.

319548689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 53.

The square root of 319548689 is about 17875.9248432074. The cubic root of 319548689 is about 683.6686728199.

The spelling of 319548689 in words is "three hundred nineteen million, five hundred forty-eight thousand, six hundred eighty-nine".