1316440418 has 4 divisors (see below), whose sum is σ = 1974660630. Its totient is φ = 658220208.

The previous prime is 1316440409. The next prime is 1316440421. The reversal of 1316440418 is 8140446131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8140446131 = 29 ⋅280705039.

It can be written as a sum of positive squares in only one way, i.e., 1262167729 + 54272689 = 35527^2 + 7367^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329110103 + ... + 329110106.

Almost surely, 2^1316440418 is an apocalyptic number.

1316440418 is a deficient number, since it is larger than the sum of its proper divisors (658220212).

1316440418 is an equidigital number, since it uses as much as digits as its factorization.

1316440418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658220211.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 1316440418 is about 36282.7840442268. The cubic root of 1316440418 is about 1095.9743814718.

Adding to 1316440418 its reverse (8140446131), we get a palindrome (9456886549).

The spelling of 1316440418 in words is "one billion, three hundred sixteen million, four hundred forty thousand, four hundred eighteen".