1126809551 has 8 divisors (see below), whose sum is σ = 1307003520. Its totient is φ = 951420888.

The previous prime is 1126809533. The next prime is 1126809559. The reversal of 1126809551 is 1559086211.

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 1126809551 - 2¹⁸ = 1126547407 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 (1126809559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1200821 + ... + 1201758.

It is an arithmetic number, because the mean of its divisors is an integer number (163375440).

Almost surely, 2^1126809551 is an apocalyptic number.

1126809551 is a deficient number, since it is larger than the sum of its proper divisors (180193969).

1126809551 is an equidigital number, since it uses as much as digits as its factorization.

1126809551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402653.

The product of its (nonzero) digits is 21600, while the sum is 38.

The square root of 1126809551 is about 33567.9840175129. The cubic root of 1126809551 is about 1040.5992450720.

The spelling of 1126809551 in words is "one billion, one hundred twenty-six million, eight hundred nine thousand, five hundred fifty-one".