1168012872 has 160 divisors (see below), whose sum is σ = 3582505080. Its totient is φ = 353341440.

The previous prime is 1168012871. The next prime is 1168012873. The reversal of 1168012872 is 2782108611.

It is an interprime number because it is at equal distance from previous prime (1168012871) and next prime (1168012873).

It can be written as a sum of positive squares in 4 ways, for example, as 722211876 + 445800996 = 26874^2 + 21114^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1168012871) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 512728 + ... + 515000.

Almost surely, 2^1168012872 is an apocalyptic number.

1168012872 is a gapful number since it is divisible by the number (12) 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 1168012872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1791252540).

1168012872 is an abundant number, since it is smaller than the sum of its proper divisors (2414492208).

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

1168012872 is a wasteful number, since it uses less digits than its factorization.

1168012872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365 (or 2352 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 1168012872 is about 34176.2032999571. The cubic root of 1168012872 is about 1053.1313543007.

The spelling of 1168012872 in words is "one billion, one hundred sixty-eight million, twelve thousand, eight hundred seventy-two".