1166203120 has 40 divisors (see below), whose sum is σ = 2744105616. Its totient is φ = 460858368.

The previous prime is 1166203067. The next prime is 1166203127. The reversal of 1166203120 is 213026611.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1166203091 and 1166203100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166203127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81177 + ... + 94456.

Almost surely, 2^1166203120 is an apocalyptic number.

1166203120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166203120 is an abundant number, since it is smaller than the sum of its proper divisors (1577902496).

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

1166203120 is a wasteful number, since it uses less digits than its factorization.

1166203120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175729 (or 175723 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1166203120 is about 34149.7162506513. The cubic root of 1166203120 is about 1052.5871560235.

Adding to 1166203120 its reverse (213026611), we get a palindrome (1379229731).

The spelling of 1166203120 in words is "one billion, one hundred sixty-six million, two hundred three thousand, one hundred twenty".