1126787649 has 16 divisors (see below), whose sum is σ = 1622554752. Its totient is φ = 691435008.

The previous prime is 1126787639. The next prime is 1126787657. The reversal of 1126787649 is 9467876211.

It is not a de Polignac number, because 1126787649 - 2⁸ = 1126787393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1126787639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27157 + ... + 54690.

It is an arithmetic number, because the mean of its divisors is an integer number (101409672).

Almost surely, 2^1126787649 is an apocalyptic number.

It is an amenable number.

1126787649 is a deficient number, since it is larger than the sum of its proper divisors (495767103).

1126787649 is a wasteful number, since it uses less digits than its factorization.

1126787649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82216.

The product of its digits is 1016064, while the sum is 51.

The square root of 1126787649 is about 33567.6577824548. The cubic root of 1126787649 is about 1040.5925029234.

The spelling of 1126787649 in words is "one billion, one hundred twenty-six million, seven hundred eighty-seven thousand, six hundred forty-nine".