1318378404 has 48 divisors (see below), whose sum is σ = 3517452288. Its totient is φ = 376489248.

The previous prime is 1318378379. The next prime is 1318378463. The reversal of 1318378404 is 4048738131.

It is a super-2 number, since 2×1318378404² = 3476243232267174432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317389 + ... + 321515.

It is an arithmetic number, because the mean of its divisors is an integer number (73280256).

Almost surely, 2^1318378404 is an apocalyptic number.

1318378404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1318378404 is an abundant number, since it is smaller than the sum of its proper divisors (2199073884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1318378404 is a wasteful number, since it uses less digits than its factorization.

1318378404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7944 (or 7942 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 1318378404 is about 36309.4809106382. The cubic root of 1318378404 is about 1096.5119274082.

The spelling of 1318378404 in words is "one billion, three hundred eighteen million, three hundred seventy-eight thousand, four hundred four".