1182128896 has 72 divisors (see below), whose sum is σ = 2549685600. Its totient is φ = 543768576.

The previous prime is 1182128879. The next prime is 1182128923. The reversal of 1182128896 is 6988212811.

It is a happy number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1973205 + ... + 1973803.

It is an arithmetic number, because the mean of its divisors is an integer number (35412300).

Almost surely, 2^1182128896 is an apocalyptic number.

1182128896 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 1182128896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274842800).

1182128896 is an abundant number, since it is smaller than the sum of its proper divisors (1367556704).

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

1182128896 is an equidigital number, since it uses as much as digits as its factorization.

1182128896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221 (or 1207 counting only the distinct ones).

The product of its digits is 110592, while the sum is 46.

The square root of 1182128896 is about 34382.1013901129. The cubic root of 1182128896 is about 1057.3569180488.

The spelling of 1182128896 in words is "one billion, one hundred eighty-two million, one hundred twenty-eight thousand, eight hundred ninety-six".