1001181380 has 12 divisors (see below), whose sum is σ = 2102480940. Its totient is φ = 400472544.

The previous prime is 1001181373. The next prime is 1001181397. The reversal of 1001181380 is 831811001.

1001181380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 712996804 + 288184576 = 26702^2 + 16976^2 .

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, 25029515 + ... + 25029554.

It is an arithmetic number, because the mean of its divisors is an integer number (175206745).

Almost surely, 2^1001181380 is an apocalyptic number.

1001181380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001181380 is an abundant number, since it is smaller than the sum of its proper divisors (1101299560).

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

1001181380 is a wasteful number, since it uses less digits than its factorization.

1001181380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50059078 (or 50059076 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 23.

The square root of 1001181380 is about 31641.4503460255. The cubic root of 1001181380 is about 1000.3936383618.

Adding to 1001181380 its reverse (831811001), we get a palindrome (1832992381).

The spelling of 1001181380 in words is "one billion, one million, one hundred eighty-one thousand, three hundred eighty".