1172919168 has 96 divisors (see below), whose sum is σ = 3402197760. Its totient is φ = 387846144.

The previous prime is 1172919037. The next prime is 1172919217. The reversal of 1172919168 is 8619192711.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 142296 + ... + 150312.

It is an arithmetic number, because the mean of its divisors is an integer number (35439560).

Almost surely, 2^1172919168 is an apocalyptic number.

1172919168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1172919168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1701098880).

1172919168 is an abundant number, since it is smaller than the sum of its proper divisors (2229278592).

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

1172919168 is a wasteful number, since it uses less digits than its factorization.

1172919168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8164 (or 8149 counting only the distinct ones).

The product of its digits is 54432, while the sum is 45.

The square root of 1172919168 is about 34247.9074981232. The cubic root of 1172919168 is about 1054.6038712568.

The spelling of 1172919168 in words is "one billion, one hundred seventy-two million, nine hundred nineteen thousand, one hundred sixty-eight".