1181020248 has 96 divisors (see below), whose sum is σ = 3276599040. Its totient is φ = 384189120.

The previous prime is 1181020231. The next prime is 1181020271. The reversal of 1181020248 is 8420201811.

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 23 ways as a sum of consecutive naturals, for example, 525415 + ... + 527657.

It is an arithmetic number, because the mean of its divisors is an integer number (34131240).

Almost surely, 2^1181020248 is an apocalyptic number.

1181020248 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 1181020248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638299520).

1181020248 is an abundant number, since it is smaller than the sum of its proper divisors (2095578792).

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

1181020248 is a wasteful number, since it uses less digits than its factorization.

1181020248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429 (or 2422 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 1181020248 is about 34365.9751498484. The cubic root of 1181020248 is about 1057.0262707214.

The spelling of 1181020248 in words is "one billion, one hundred eighty-one million, twenty thousand, two hundred forty-eight".