1145531663 has 2 divisors, whose sum is σ = 1145531664. Its totient is φ = 1145531662.

The previous prime is 1145531617. The next prime is 1145531671. The reversal of 1145531663 is 3661355411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1145531663 - 2²⁶ = 1078422799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145531683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572765831 + 572765832.

It is an arithmetic number, because the mean of its divisors is an integer number (572765832).

Almost surely, 2^1145531663 is an apocalyptic number.

1145531663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145531663 is an equidigital number, since it uses as much as digits as its factorization.

1145531663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 35.

The square root of 1145531663 is about 33845.7037598570. The cubic root of 1145531663 is about 1046.3308556744.

The spelling of 1145531663 in words is "one billion, one hundred forty-five million, five hundred thirty-one thousand, six hundred sixty-three".