1180938681 has 24 divisors (see below), whose sum is σ = 1838248776. Its totient is φ = 726243840.

The previous prime is 1180938679. The next prime is 1180938719. The reversal of 1180938681 is 1868390811.

It can be written as a sum of positive squares in 4 ways, for example, as 235929600 + 945009081 = 15360^2 + 30741^2 .

It is not a de Polignac number, because 1180938681 - 2¹ = 1180938679 is a prime.

It is a super-2 number, since 2×1180938681² = 2789232336564039522, which contains 22 as substring.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1180938641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256641 + ... + 261201.

It is an arithmetic number, because the mean of its divisors is an integer number (76593699).

Almost surely, 2^1180938681 is an apocalyptic number.

It is an amenable number.

1180938681 is a deficient number, since it is larger than the sum of its proper divisors (657310095).

1180938681 is a wasteful number, since it uses less digits than its factorization.

1180938681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6793 (or 6790 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 1180938681 is about 34364.7883886981. The cubic root of 1180938681 is about 1057.0019357034.

The spelling of 1180938681 in words is "one billion, one hundred eighty million, nine hundred thirty-eight thousand, six hundred eighty-one".