1180540811 has 2 divisors, whose sum is σ = 1180540812. Its totient is φ = 1180540810.

The previous prime is 1180540807. The next prime is 1180540831. The reversal of 1180540811 is 1180450811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1180540811 - 2² = 1180540807 is a prime.

It is a super-3 number, since 3×1180540811³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1180540831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590270405 + 590270406.

It is an arithmetic number, because the mean of its divisors is an integer number (590270406).

Almost surely, 2^1180540811 is an apocalyptic number.

1180540811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1180540811 is an equidigital number, since it uses as much as digits as its factorization.

1180540811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 29.

The square root of 1180540811 is about 34358.9989813440. The cubic root of 1180540811 is about 1056.8832175445.

Subtracting from 1180540811 its reverse (1180450811), we obtain a square (90000 = 300²).

The spelling of 1180540811 in words is "one billion, one hundred eighty million, five hundred forty thousand, eight hundred eleven".