1318798356 has 24 divisors (see below), whose sum is σ = 3081449280. Its totient is φ = 438991872.

The previous prime is 1318798339. The next prime is 1318798361. The reversal of 1318798356 is 6538978131.

It is a junction number, because it is equal to n+sod(n) for n = 1318798299 and 1318798308.

It is a congruent number.

It is an unprimeable number.

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, 66861 + ... + 84308.

It is an arithmetic number, because the mean of its divisors is an integer number (128393720).

Almost surely, 2^1318798356 is an apocalyptic number.

It is an amenable number.

1318798356 is an abundant number, since it is smaller than the sum of its proper divisors (1762650924).

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

1318798356 is a wasteful number, since it uses less digits than its factorization.

1318798356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151903 (or 151901 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 51.

The square root of 1318798356 is about 36315.2634025970. The cubic root of 1318798356 is about 1096.6283415047.

The spelling of 1318798356 in words is "one billion, three hundred eighteen million, seven hundred ninety-eight thousand, three hundred fifty-six".