1186849666 has 16 divisors (see below), whose sum is σ = 1840678200. Its totient is φ = 573505920.

The previous prime is 1186849637. The next prime is 1186849667. The reversal of 1186849666 is 6669486811.

It can be written as a sum of positive squares in 4 ways, for example, as 874444041 + 312405625 = 29571^2 + 17675^2 .

It is a super-2 number, since 2×1186849666² = 2817224259368623112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1186849667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42795 + ... + 64846.

Almost surely, 2^1186849666 is an apocalyptic number.

1186849666 is a deficient number, since it is larger than the sum of its proper divisors (653828534).

1186849666 is a wasteful number, since it uses less digits than its factorization.

1186849666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107829.

The product of its digits is 2985984, while the sum is 55.

The square root of 1186849666 is about 34450.6845505282. The cubic root of 1186849666 is about 1058.7625484765.

The spelling of 1186849666 in words is "one billion, one hundred eighty-six million, eight hundred forty-nine thousand, six hundred sixty-six".