1171142896 has 80 divisors (see below), whose sum is σ = 2835318528. Its totient is φ = 455270400.

The previous prime is 1171142849. The next prime is 1171142897. The reversal of 1171142896 is 6982411711.

It is a super-3 number, since 3×1171142896³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171142897) 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, 788971 + ... + 790453.

Almost surely, 2^1171142896 is an apocalyptic number.

1171142896 is a gapful number since it is divisible by the number (16) 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 1171142896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1417659264).

1171142896 is an abundant number, since it is smaller than the sum of its proper divisors (1664175632).

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

1171142896 is a wasteful number, since it uses less digits than its factorization.

1171142896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150 (or 2144 counting only the distinct ones).

The product of its digits is 24192, while the sum is 40.

The square root of 1171142896 is about 34221.9651101453. The cubic root of 1171142896 is about 1054.0712372953.

The spelling of 1171142896 in words is "one billion, one hundred seventy-one million, one hundred forty-two thousand, eight hundred ninety-six".