1188633278513 has 2 divisors, whose sum is σ = 1188633278514. Its totient is φ = 1188633278512.

The previous prime is 1188633278369. The next prime is 1188633278551. The reversal of 1188633278513 is 3158723368811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1062699142129 + 125934136384 = 1030873^2 + 354872^2 .

It is a cyclic number.

It is not a de Polignac number, because 1188633278513 - 2¹² = 1188633274417 is a prime.

It is not a weakly prime, because it can be changed into another prime (1181633278513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594316639256 + 594316639257.

It is an arithmetic number, because the mean of its divisors is an integer number (594316639257).

Almost surely, 2^{1188633278513} is an apocalyptic number.

It is an amenable number.

1188633278513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1188633278513 is an equidigital number, since it uses as much as digits as its factorization.

1188633278513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 56.

The spelling of 1188633278513 in words is "one trillion, one hundred eighty-eight billion, six hundred thirty-three million, two hundred seventy-eight thousand, five hundred thirteen".