1163541521 has 2 divisors, whose sum is σ = 1163541522. Its totient is φ = 1163541520.

The previous prime is 1163541487. The next prime is 1163541529. The reversal of 1163541521 is 1251453611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1062760000 + 100781521 = 32600^2 + 10039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1163541521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1163541529) 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, 581770760 + 581770761.

It is an arithmetic number, because the mean of its divisors is an integer number (581770761).

Almost surely, 2^1163541521 is an apocalyptic number.

It is an amenable number.

1163541521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163541521 is an equidigital number, since it uses as much as digits as its factorization.

1163541521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 29.

The square root of 1163541521 is about 34110.7244279567. The cubic root of 1163541521 is about 1051.7857807753.

The spelling of 1163541521 in words is "one billion, one hundred sixty-three million, five hundred forty-one thousand, five hundred twenty-one".