318636145 has 8 divisors (see below), whose sum is σ = 383253120. Its totient is φ = 254315760.

The previous prime is 318636139. The next prime is 318636161. The reversal of 318636145 is 541636813.

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

It is not a de Polignac number, because 318636145 - 2²⁷ = 184418417 is a prime.

It is a super-2 number, since 2×318636145² = 203057985800922050, which contains 22 as substring.

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, 71775 + ... + 76084.

It is an arithmetic number, because the mean of its divisors is an integer number (47906640).

Almost surely, 2^318636145 is an apocalyptic number.

It is an amenable number.

318636145 is a deficient number, since it is larger than the sum of its proper divisors (64616975).

318636145 is a wasteful number, since it uses less digits than its factorization.

318636145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148295.

The product of its digits is 51840, while the sum is 37.

The square root of 318636145 is about 17850.3822087932. The cubic root of 318636145 is about 683.0172618500.

The spelling of 318636145 in words is "three hundred eighteen million, six hundred thirty-six thousand, one hundred forty-five".