1126136687 has 4 divisors (see below), whose sum is σ = 1212762600. Its totient is φ = 1039510776.

The previous prime is 1126136681. The next prime is 1126136701. The reversal of 1126136687 is 7866316211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1126136687 - 2¹² = 1126132591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126136681) 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, 43312937 + ... + 43312962.

It is an arithmetic number, because the mean of its divisors is an integer number (303190650).

Almost surely, 2^1126136687 is an apocalyptic number.

1126136687 is a deficient number, since it is larger than the sum of its proper divisors (86625913).

1126136687 is an equidigital number, since it uses as much as digits as its factorization.

1126136687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86625912.

The product of its digits is 72576, while the sum is 41.

The square root of 1126136687 is about 33557.9601138091. The cubic root of 1126136687 is about 1040.3920757282.

The spelling of 1126136687 in words is "one billion, one hundred twenty-six million, one hundred thirty-six thousand, six hundred eighty-seven".