1180540873 has 2 divisors, whose sum is σ = 1180540874. Its totient is φ = 1180540872.

The previous prime is 1180540861. The next prime is 1180540901. The reversal of 1180540873 is 3780450811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1179716409 + 824464 = 34347^2 + 908^2 .

It is an emirp because it is prime and its reverse (3780450811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1180540873 - 2²⁵ = 1146986441 is a prime.

It is not a weakly prime, because it can be changed into another prime (1180540373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590270436 + 590270437.

It is an arithmetic number, because the mean of its divisors is an integer number (590270437).

Almost surely, 2^1180540873 is an apocalyptic number.

It is an amenable number.

1180540873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1180540873 is an equidigital number, since it uses as much as digits as its factorization.

1180540873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 1180540873 is about 34358.9998835822. Note that the first 3 decimals coincide. The cubic root of 1180540873 is about 1056.8832360464.

The spelling of 1180540873 in words is "one billion, one hundred eighty million, five hundred forty thousand, eight hundred seventy-three".