1328918743 has 4 divisors (see below), whose sum is σ = 1329005880. Its totient is φ = 1328831608.

The previous prime is 1328918737. The next prime is 1328918753. The reversal of 1328918743 is 3478198231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1328918743 - 2⁹ = 1328918231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1328918693 and 1328918702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328918753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14005 + ... + 53422.

It is an arithmetic number, because the mean of its divisors is an integer number (332251470).

Almost surely, 2^1328918743 is an apocalyptic number.

1328918743 is a deficient number, since it is larger than the sum of its proper divisors (87137).

1328918743 is an equidigital number, since it uses as much as digits as its factorization.

1328918743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87136.

The product of its digits is 290304, while the sum is 46.

The square root of 1328918743 is about 36454.3377802971. The cubic root of 1328918743 is about 1099.4263518597.

The spelling of 1328918743 in words is "one billion, three hundred twenty-eight million, nine hundred eighteen thousand, seven hundred forty-three".