1135813897 has 8 divisors (see below), whose sum is σ = 1163383200. Its totient is φ = 1108521984.

The previous prime is 1135813879. The next prime is 1135813907. The reversal of 1135813897 is 7983185311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1135813897 is a prime.

It is a super-4 number, since 4×1135813897⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1135813097) 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 in 7 ways as a sum of consecutive naturals, for example, 61048 + ... + 77449.

It is an arithmetic number, because the mean of its divisors is an integer number (145422900).

Almost surely, 2^1135813897 is an apocalyptic number.

It is an amenable number.

1135813897 is a deficient number, since it is larger than the sum of its proper divisors (27569303).

1135813897 is a wasteful number, since it uses less digits than its factorization.

1135813897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138695.

The product of its digits is 181440, while the sum is 46.

The square root of 1135813897 is about 33701.8381842890. The cubic root of 1135813897 is about 1043.3637073522.

The spelling of 1135813897 in words is "one billion, one hundred thirty-five million, eight hundred thirteen thousand, eight hundred ninety-seven".