1188164131657 has 2 divisors, whose sum is σ = 1188164131658. Its totient is φ = 1188164131656.

The previous prime is 1188164131591. The next prime is 1188164131717. The reversal of 1188164131657 is 7561314618811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 715815831481 + 472348300176 = 846059^2 + 687276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1188164131657 is a prime.

It is not a weakly prime, because it can be changed into another prime (1188164131457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594082065828 + 594082065829.

It is an arithmetic number, because the mean of its divisors is an integer number (594082065829).

Almost surely, 2^{1188164131657} is an apocalyptic number.

It is an amenable number.

1188164131657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1188164131657 is an equidigital number, since it uses as much as digits as its factorization.

1188164131657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 52.

The spelling of 1188164131657 in words is "one trillion, one hundred eighty-eight billion, one hundred sixty-four million, one hundred thirty-one thousand, six hundred fifty-seven".