1126536513 has 4 divisors (see below), whose sum is σ = 1502048688. Its totient is φ = 751024340.

The previous prime is 1126536491. The next prime is 1126536517. The reversal of 1126536513 is 3156356211.

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 an emirpimes, since its reverse is a distinct semiprime: 3156356211 = 3 ⋅1052118737.

It is a cyclic number.

It is not a de Polignac number, because 1126536513 - 2¹² = 1126532417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1126536517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187756083 + ... + 187756088.

It is an arithmetic number, because the mean of its divisors is an integer number (375512172).

Almost surely, 2^1126536513 is an apocalyptic number.

It is an amenable number.

1126536513 is a deficient number, since it is larger than the sum of its proper divisors (375512175).

1126536513 is an equidigital number, since it uses as much as digits as its factorization.

1126536513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375512174.

The product of its digits is 16200, while the sum is 33.

The square root of 1126536513 is about 33563.9168304297. The cubic root of 1126536513 is about 1040.5151888419.

The spelling of 1126536513 in words is "one billion, one hundred twenty-six million, five hundred thirty-six thousand, five hundred thirteen".