1185563148541 has 2 divisors, whose sum is σ = 1185563148542. Its totient is φ = 1185563148540.

The previous prime is 1185563148521. The next prime is 1185563148547. The reversal of 1185563148541 is 1458413655811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 611165896441 + 574397252100 = 781771^2 + 757890^2 .

It is a cyclic number.

It is not a de Polignac number, because 1185563148541 - 2¹⁵ = 1185563115773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1185563148547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 592781574270 + 592781574271.

It is an arithmetic number, because the mean of its divisors is an integer number (592781574271).

Almost surely, 2^{1185563148541} is an apocalyptic number.

It is an amenable number.

1185563148541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1185563148541 is an equidigital number, since it uses as much as digits as its factorization.

1185563148541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304000, while the sum is 52.

The spelling of 1185563148541 in words is "one trillion, one hundred eighty-five billion, five hundred sixty-three million, one hundred forty-eight thousand, five hundred forty-one".