1151305666 has 48 divisors (see below), whose sum is σ = 2079016632. Its totient is φ = 476448000.

The previous prime is 1151305619. The next prime is 1151305669. The reversal of 1151305666 is 6665031511.

It can be written as a sum of positive squares in 4 ways, for example, as 694586025 + 456719641 = 26355^2 + 21371^2 .

It is not an unprimeable number, because it can be changed into a prime (1151305669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 404400 + ... + 407236.

Almost surely, 2^1151305666 is an apocalyptic number.

1151305666 is a deficient number, since it is larger than the sum of its proper divisors (927710966).

1151305666 is a wasteful number, since it uses less digits than its factorization.

1151305666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2995 (or 2988 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 1151305666 is about 33930.8954494278. The cubic root of 1151305666 is about 1048.0859054195.

The spelling of 1151305666 in words is "one billion, one hundred fifty-one million, three hundred five thousand, six hundred sixty-six".