1166489149 has 8 divisors (see below), whose sum is σ = 1360337600. Its totient is φ = 999847548.

The previous prime is 1166489147. The next prime is 1166489171. The reversal of 1166489149 is 9419846611.

It is not a de Polignac number, because 1166489149 - 2¹ = 1166489147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166489141) 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, 1700079 + ... + 1700764.

It is an arithmetic number, because the mean of its divisors is an integer number (170042200).

Almost surely, 2^1166489149 is an apocalyptic number.

It is an amenable number.

1166489149 is a deficient number, since it is larger than the sum of its proper divisors (193848451).

1166489149 is an frugal number, since it uses more digits than its factorization.

1166489149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400864 (or 3400850 counting only the distinct ones).

The product of its digits is 373248, while the sum is 49.

The square root of 1166489149 is about 34153.9038617842. The cubic root of 1166489149 is about 1052.6732033098.

The spelling of 1166489149 in words is "one billion, one hundred sixty-six million, four hundred eighty-nine thousand, one hundred forty-nine".