1304672218 has 4 divisors (see below), whose sum is σ = 1957008330. Its totient is φ = 652336108.

The previous prime is 1304672203. The next prime is 1304672219. The reversal of 1304672218 is 8122764031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1301549929 + 3122289 = 36077^2 + 1767^2 .

It is not an unprimeable number, because it can be changed into a prime (1304672219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326168053 + ... + 326168056.

Almost surely, 2^1304672218 is an apocalyptic number.

1304672218 is a deficient number, since it is larger than the sum of its proper divisors (652336112).

1304672218 is an equidigital number, since it uses as much as digits as its factorization.

1304672218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652336111.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 1304672218 is about 36120.2466492132. The cubic root of 1304672218 is about 1092.6988135088.

It can be divided in two parts, 13046 and 72218, that added together give a square (85264 = 292²).

The spelling of 1304672218 in words is "one billion, three hundred four million, six hundred seventy-two thousand, two hundred eighteen".