1166185045 has 16 divisors (see below), whose sum is σ = 1409082480. Its totient is φ = 926531584.

The previous prime is 1166185043. The next prime is 1166185061. The reversal of 1166185045 is 5405816611.

It can be written as a sum of positive squares in 8 ways, for example, as 1874161 + 1164310884 = 1369^2 + 34122^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166185045 - 2¹ = 1166185043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1166184995 and 1166185013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166185043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498699 + ... + 501031.

It is an arithmetic number, because the mean of its divisors is an integer number (88067655).

Almost surely, 2^1166185045 is an apocalyptic number.

It is an amenable number.

1166185045 is a deficient number, since it is larger than the sum of its proper divisors (242897435).

1166185045 is a wasteful number, since it uses less digits than its factorization.

1166185045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2984.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 1166185045 is about 34149.4516061386. The cubic root of 1166185045 is about 1052.5817179740.

The spelling of 1166185045 in words is "one billion, one hundred sixty-six million, one hundred eighty-five thousand, forty-five".