1318342819 has 8 divisors (see below), whose sum is σ = 1412843040. Its totient is φ = 1226941056.

The previous prime is 1318342789. The next prime is 1318342847. The reversal of 1318342819 is 9182438131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1318342819 - 2⁹ = 1318342307 is a prime.

It is a super-2 number, since 2×1318342819² = 3476055576817733522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1318042819) 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 in 7 ways as a sum of consecutive naturals, for example, 773734 + ... + 775435.

It is an arithmetic number, because the mean of its divisors is an integer number (176605380).

Almost surely, 2^1318342819 is an apocalyptic number.

1318342819 is a deficient number, since it is larger than the sum of its proper divisors (94500221).

1318342819 is a wasteful number, since it uses less digits than its factorization.

1318342819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549229.

The product of its digits is 41472, while the sum is 40.

The square root of 1318342819 is about 36308.9908838018. The cubic root of 1318342819 is about 1096.5020618219.

The spelling of 1318342819 in words is "one billion, three hundred eighteen million, three hundred forty-two thousand, eight hundred nineteen".