1180434128 has 40 divisors (see below), whose sum is σ = 2432344320. Its totient is φ = 553374720.

The previous prime is 1180434121. The next prime is 1180434133. The reversal of 1180434128 is 8214340811.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1180434094 and 1180434103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180434121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9473 + ... + 49503.

It is an arithmetic number, because the mean of its divisors is an integer number (60808608).

Almost surely, 2^1180434128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1180434128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1216172160).

1180434128 is an abundant number, since it is smaller than the sum of its proper divisors (1251910192).

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

1180434128 is a wasteful number, since it uses less digits than its factorization.

1180434128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40155 (or 40149 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 1180434128 is about 34357.4464708890. The cubic root of 1180434128 is about 1056.8513804780.

Adding to 1180434128 its reverse (8214340811), we get a palindrome (9394774939).

The spelling of 1180434128 in words is "one billion, one hundred eighty million, four hundred thirty-four thousand, one hundred twenty-eight".