318418740 has 36 divisors (see below), whose sum is σ = 965870724. Its totient is φ = 84911616.

The previous prime is 318418703. The next prime is 318418747. The reversal of 318418740 is 47814813.

It can be written as a sum of positive squares in 2 ways, for example, as 116380944 + 202037796 = 10788^2 + 14214^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 318418695 and 318418704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318418747) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 884317 + ... + 884676.

Almost surely, 2^318418740 is an apocalyptic number.

318418740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

318418740 is an abundant number, since it is smaller than the sum of its proper divisors (647451984).

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

318418740 is a wasteful number, since it uses less digits than its factorization.

318418740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769008 (or 1769003 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 318418740 is about 17844.2915241822. The cubic root of 318418740 is about 682.8618859301.

The spelling of 318418740 in words is "three hundred eighteen million, four hundred eighteen thousand, seven hundred forty".