1318615345 has 8 divisors (see below), whose sum is σ = 1608278760. Its totient is φ = 1037598720.

The previous prime is 1318615303. The next prime is 1318615351. The reversal of 1318615345 is 5435168131.

It can be written as a sum of positive squares in 4 ways, for example, as 10491121 + 1308124224 = 3239^2 + 36168^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1318615345 - 2¹¹ = 1318613297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2161360 + ... + 2161969.

It is an arithmetic number, because the mean of its divisors is an integer number (201034845).

Almost surely, 2^1318615345 is an apocalyptic number.

It is an amenable number.

1318615345 is a deficient number, since it is larger than the sum of its proper divisors (289663415).

1318615345 is an equidigital number, since it uses as much as digits as its factorization.

1318615345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4323395.

The product of its digits is 43200, while the sum is 37.

The square root of 1318615345 is about 36312.7435620059. The cubic root of 1318615345 is about 1096.5776124116.

The spelling of 1318615345 in words is "one billion, three hundred eighteen million, six hundred fifteen thousand, three hundred forty-five".