1136126561 has 8 divisors (see below), whose sum is σ = 1186304064. Its totient is φ = 1086014160.

The previous prime is 1136126543. The next prime is 1136126569. The reversal of 1136126561 is 1656216311.

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

It is a cyclic number.

It is not a de Polignac number, because 1136126561 - 2¹⁸ = 1135864417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1136126569) 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 7 ways as a sum of consecutive naturals, for example, 21266 + ... + 52196.

It is an arithmetic number, because the mean of its divisors is an integer number (148288008).

Almost surely, 2^1136126561 is an apocalyptic number.

It is an amenable number.

1136126561 is a deficient number, since it is larger than the sum of its proper divisors (50177503).

1136126561 is a wasteful number, since it uses less digits than its factorization.

1136126561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32551.

The product of its digits is 6480, while the sum is 32.

The square root of 1136126561 is about 33706.4765438335. The cubic root of 1136126561 is about 1043.4594367500.

The spelling of 1136126561 in words is "one billion, one hundred thirty-six million, one hundred twenty-six thousand, five hundred sixty-one".