1320404738 has 4 divisors (see below), whose sum is σ = 1980607110. Its totient is φ = 660202368.

The previous prime is 1320404737. The next prime is 1320404749. The reversal of 1320404738 is 8374040231.

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., 1191423289 + 128981449 = 34517^2 + 11357^2 .

It is not an unprimeable number, because it can be changed into a prime (1320404737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330101183 + ... + 330101186.

Almost surely, 2^1320404738 is an apocalyptic number.

1320404738 is a deficient number, since it is larger than the sum of its proper divisors (660202372).

1320404738 is an equidigital number, since it uses as much as digits as its factorization.

1320404738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660202371.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 1320404738 is about 36337.3738456702. The cubic root of 1320404738 is about 1097.0734156776.

Adding to 1320404738 its reverse (8374040231), we get a palindrome (9694444969).

The spelling of 1320404738 in words is "one billion, three hundred twenty million, four hundred four thousand, seven hundred thirty-eight".