1181284040 has 16 divisors (see below), whose sum is σ = 2657889180. Its totient is φ = 472513600.

The previous prime is 1181284037. The next prime is 1181284063. The reversal of 1181284040 is 404821811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 999950884 + 181333156 = 31622^2 + 13466^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1181283994 and 1181284012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14766011 + ... + 14766090.

Almost surely, 2^1181284040 is an apocalyptic number.

1181284040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1181284040 is an abundant number, since it is smaller than the sum of its proper divisors (1476605140).

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

1181284040 is a wasteful number, since it uses less digits than its factorization.

1181284040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29532112 (or 29532108 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 1181284040 is about 34369.8129177335. The cubic root of 1181284040 is about 1057.1049637883.

The spelling of 1181284040 in words is "one billion, one hundred eighty-one million, two hundred eighty-four thousand, forty".