1308919 has 2 divisors, whose sum is σ = 1308920. Its totient is φ = 1308918.

The previous prime is 1308917. The next prime is 1308943. The reversal of 1308919 is 9198031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1308919 - 2¹ = 1308917 is a prime.

It is a super-2 number, since 2×1308919² = 3426537897122, which contains 22 as substring.

Together with 1308917, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1308911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654459 + 654460.

It is an arithmetic number, because the mean of its divisors is an integer number (654460).

2^1308919 is an apocalyptic number.

1308919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1308919 is an equidigital number, since it uses as much as digits as its factorization.

1308919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 1308919 is about 1144.0799797217. The cubic root of 1308919 is about 109.3883128285.

The spelling of 1308919 in words is "one million, three hundred eight thousand, nine hundred nineteen".