1318420346 has 16 divisors (see below), whose sum is σ = 2094702120. Its totient is φ = 620213760.

The previous prime is 1318420343. The next prime is 1318420349. The reversal of 1318420346 is 6430248131.

It is an interprime number because it is at equal distance from previous prime (1318420343) and next prime (1318420349).

It can be written as a sum of positive squares in 4 ways, for example, as 930921121 + 387499225 = 30511^2 + 19685^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1318420343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130766 + ... + 140486.

Almost surely, 2^1318420346 is an apocalyptic number.

1318420346 is a deficient number, since it is larger than the sum of its proper divisors (776281774).

1318420346 is a wasteful number, since it uses less digits than its factorization.

1318420346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13729.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1318420346 is about 36310.0584686943. The cubic root of 1318420346 is about 1096.5235551815.

Adding to 1318420346 its reverse (6430248131), we get a palindrome (7748668477).

The spelling of 1318420346 in words is "one billion, three hundred eighteen million, four hundred twenty thousand, three hundred forty-six".