1166145132 has 48 divisors (see below), whose sum is σ = 2812513760. Its totient is φ = 375777792.

The previous prime is 1166145053. The next prime is 1166145133. The reversal of 1166145132 is 2315416611.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1166145132.

It is not an unprimeable number, because it can be changed into a prime (1166145133) 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, 61344 + ... + 78072.

Almost surely, 2^1166145132 is an apocalyptic number.

1166145132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1166145132 is an abundant number, since it is smaller than the sum of its proper divisors (1646368628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1166145132 is a wasteful number, since it uses less digits than its factorization.

1166145132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16930 (or 16928 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 1166145132 is about 34148.8672140087. The cubic root of 1166145132 is about 1052.5697095386.

The spelling of 1166145132 in words is "one billion, one hundred sixty-six million, one hundred forty-five thousand, one hundred thirty-two".