1320637106 has 8 divisors (see below), whose sum is σ = 1986049260. Its totient is φ = 658620688.

The previous prime is 1320637103. The next prime is 1320637141. The reversal of 1320637106 is 6017360231.

It can be written as a sum of positive squares in 2 ways, for example, as 1309354225 + 11282881 = 36185^2 + 3359^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1320637103) 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, 847961 + ... + 849516.

Almost surely, 2^1320637106 is an apocalyptic number.

1320637106 is a deficient number, since it is larger than the sum of its proper divisors (665412154).

1320637106 is a wasteful number, since it uses less digits than its factorization.

1320637106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697868.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 1320637106 is about 36340.5710742140. The cubic root of 1320637106 is about 1097.1377671085.

Adding to 1320637106 its reverse (6017360231), we get a palindrome (7337997337).

The spelling of 1320637106 in words is "one billion, three hundred twenty million, six hundred thirty-seven thousand, one hundred six".