181180099 has 2 divisors, whose sum is σ = 181180100. Its totient is φ = 181180098.

The previous prime is 181180049. The next prime is 181180123. The reversal of 181180099 is 990081181.

It is a happy number.

181180099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 181180099 - 2⁹ = 181179587 is a prime.

It is not a weakly prime, because it can be changed into another prime (181180049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90590049 + 90590050.

It is an arithmetic number, because the mean of its divisors is an integer number (90590050).

Almost surely, 2^181180099 is an apocalyptic number.

181180099 is a deficient number, since it is larger than the sum of its proper divisors (1).

181180099 is an equidigital number, since it uses as much as digits as its factorization.

181180099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 37.

The square root of 181180099 is about 13460.3157095218. The cubic root of 181180099 is about 565.8528368748.

It can be divided in two parts, 1 and 81180099, that added together give a square (81180100 = 9010²).

The spelling of 181180099 in words is "one hundred eighty-one million, one hundred eighty thousand, ninety-nine".