1318344155 has 8 divisors (see below), whose sum is σ = 1589964000. Its totient is φ = 1049374656.

The previous prime is 1318344133. The next prime is 1318344173. The reversal of 1318344155 is 5514438131.

It is a happy number.

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 1318344155 - 2⁶ = 1318344091 is a prime.

It is a super-2 number, since 2×1318344155² = 3476062622045328050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661490 + ... + 663479.

It is an arithmetic number, because the mean of its divisors is an integer number (198745500).

Almost surely, 2^1318344155 is an apocalyptic number.

1318344155 is a deficient number, since it is larger than the sum of its proper divisors (271619845).

1318344155 is a wasteful number, since it uses less digits than its factorization.

1318344155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325173.

The product of its digits is 28800, while the sum is 35.

The square root of 1318344155 is about 36309.0092814442. The cubic root of 1318344155 is about 1096.5024322177.

The spelling of 1318344155 in words is "one billion, three hundred eighteen million, three hundred forty-four thousand, one hundred fifty-five".