1181082240 has 192 divisors, whose sum is σ = 4392428040. Its totient is φ = 290709504.

The previous prime is 1181082233. The next prime is 1181082289. The reversal of 1181082240 is 422801811.

It can be written as a sum of positive squares in 4 ways, for example, as 787139136 + 393943104 = 28056^2 + 19848^2 .

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66994 + ... + 82766.

Almost surely, 2^1181082240 is an apocalyptic number.

1181082240 is a gapful number since it is divisible by the number (10) 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 1181082240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2196214020).

1181082240 is an abundant number, since it is smaller than the sum of its proper divisors (3211345800).

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

1181082240 is a wasteful number, since it uses less digits than its factorization.

1181082240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15811 (or 15796 counting only the distinct ones).

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

The square root of 1181082240 is about 34366.8770766271. The cubic root of 1181082240 is about 1057.0447649078.

The spelling of 1181082240 in words is "one billion, one hundred eighty-one million, eighty-two thousand, two hundred forty".