1318789072 has 20 divisors (see below), whose sum is σ = 2568398980. Its totient is φ = 655976448.

The previous prime is 1318789061. The next prime is 1318789079. The reversal of 1318789072 is 2709878131.

It can be written as a sum of positive squares in 2 ways, for example, as 121352256 + 1197436816 = 11016^2 + 34604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318789079) 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 3 ways as a sum of consecutive naturals, for example, 210447 + ... + 216622.

It is an arithmetic number, because the mean of its divisors is an integer number (128419949).

Almost surely, 2^1318789072 is an apocalyptic number.

It is an amenable number.

1318789072 is a deficient number, since it is larger than the sum of its proper divisors (1249609908).

1318789072 is a wasteful number, since it uses less digits than its factorization.

1318789072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427270 (or 427264 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 1318789072 is about 36315.1355773319. The cubic root of 1318789072 is about 1096.6257681718.

The spelling of 1318789072 in words is "one billion, three hundred eighteen million, seven hundred eighty-nine thousand, seventy-two".