1126161851 has 4 divisors (see below), whose sum is σ = 1145249400. Its totient is φ = 1107074304.

The previous prime is 1126161847. The next prime is 1126161913. The reversal of 1126161851 is 1581616211.

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 1126161851 - 2² = 1126161847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1126161151) 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, 9543686 + ... + 9543803.

It is an arithmetic number, because the mean of its divisors is an integer number (286312350).

Almost surely, 2^1126161851 is an apocalyptic number.

1126161851 is a deficient number, since it is larger than the sum of its proper divisors (19087549).

1126161851 is an equidigital number, since it uses as much as digits as its factorization.

1126161851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19087548.

The product of its digits is 2880, while the sum is 32.

The square root of 1126161851 is about 33558.3350451121. The cubic root of 1126161851 is about 1040.3998250039.

The spelling of 1126161851 in words is "one billion, one hundred twenty-six million, one hundred sixty-one thousand, eight hundred fifty-one".