1328111537 has 2 divisors, whose sum is σ = 1328111538. Its totient is φ = 1328111536.

The previous prime is 1328111527. The next prime is 1328111549. The reversal of 1328111537 is 7351118231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 804800161 + 523311376 = 28369^2 + 22876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1328111537 is a prime.

It is not a weakly prime, because it can be changed into another prime (1328111507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664055768 + 664055769.

It is an arithmetic number, because the mean of its divisors is an integer number (664055769).

Almost surely, 2^1328111537 is an apocalyptic number.

It is an amenable number.

1328111537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328111537 is an equidigital number, since it uses as much as digits as its factorization.

1328111537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 32.

The square root of 1328111537 is about 36443.2646314789. The cubic root of 1328111537 is about 1099.2037038612.

Adding to 1328111537 its reverse (7351118231), we get a palindrome (8679229768).

The spelling of 1328111537 in words is "one billion, three hundred twenty-eight million, one hundred eleven thousand, five hundred thirty-seven".