1319106643 has 2 divisors, whose sum is σ = 1319106644. Its totient is φ = 1319106642.

The previous prime is 1319106641. The next prime is 1319106661. The reversal of 1319106643 is 3466019131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1319106643 - 2¹ = 1319106641 is a prime.

Together with 1319106641, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1319106599 and 1319106608.

It is not a weakly prime, because it can be changed into another prime (1319106641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659553321 + 659553322.

It is an arithmetic number, because the mean of its divisors is an integer number (659553322).

Almost surely, 2^1319106643 is an apocalyptic number.

1319106643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319106643 is an equidigital number, since it uses as much as digits as its factorization.

1319106643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 1319106643 is about 36319.5077472149. The cubic root of 1319106643 is about 1096.7137854292.

The spelling of 1319106643 in words is "one billion, three hundred nineteen million, one hundred six thousand, six hundred forty-three".