1126816665 has 32 divisors (see below), whose sum is σ = 1943222400. Its totient is φ = 554274816.

The previous prime is 1126816651. The next prime is 1126816693. The reversal of 1126816665 is 5666186211.

It is not a de Polignac number, because 1126816665 - 2⁸ = 1126816409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 407929 + ... + 410681.

It is an arithmetic number, because the mean of its divisors is an integer number (60725700).

Almost surely, 2^1126816665 is an apocalyptic number.

1126816665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1126816665 is a deficient number, since it is larger than the sum of its proper divisors (816405735).

1126816665 is a wasteful number, since it uses less digits than its factorization.

1126816665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4873.

The product of its digits is 103680, while the sum is 42.

The square root of 1126816665 is about 33568.0899814094. The cubic root of 1126816665 is about 1040.6014349740.

The spelling of 1126816665 in words is "one billion, one hundred twenty-six million, eight hundred sixteen thousand, six hundred sixty-five".