1126816666 has 4 divisors (see below), whose sum is σ = 1690225002. Its totient is φ = 563408332.

The previous prime is 1126816651. The next prime is 1126816693. The reversal of 1126816666 is 6666186211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6666186211 = 719 ⋅9271469.

It can be written as a sum of positive squares in only one way, i.e., 946854441 + 179962225 = 30771^2 + 13415^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281704165 + ... + 281704168.

Almost surely, 2^1126816666 is an apocalyptic number.

1126816666 is a deficient number, since it is larger than the sum of its proper divisors (563408336).

1126816666 is an equidigital number, since it uses as much as digits as its factorization.

1126816666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563408335.

The product of its digits is 124416, while the sum is 43.

The square root of 1126816666 is about 33568.0899963045. The cubic root of 1126816666 is about 1040.6014352818.

The spelling of 1126816666 in words is "one billion, one hundred twenty-six million, eight hundred sixteen thousand, six hundred sixty-six".