1135205497 has 4 divisors (see below), whose sum is σ = 1135293696. Its totient is φ = 1135117300.

The previous prime is 1135205471. The next prime is 1135205507. The reversal of 1135205497 is 7945025311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7945025311 = 107 ⋅74252573.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1135205497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1135203497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20629 + ... + 51922.

It is an arithmetic number, because the mean of its divisors is an integer number (283823424).

Almost surely, 2^1135205497 is an apocalyptic number.

It is an amenable number.

1135205497 is a deficient number, since it is larger than the sum of its proper divisors (88199).

1135205497 is an equidigital number, since it uses as much as digits as its factorization.

1135205497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88198.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 1135205497 is about 33692.8107613479. The cubic root of 1135205497 is about 1043.1773810959.

The spelling of 1135205497 in words is "one billion, one hundred thirty-five million, two hundred five thousand, four hundred ninety-seven".