180853001081 has 2 divisors, whose sum is σ = 180853001082. Its totient is φ = 180853001080.

The previous prime is 180853001047. The next prime is 180853001099. The reversal of 180853001081 is 180100358081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170102629225 + 10750371856 = 412435^2 + 103684^2 .

It is a cyclic number.

It is not a de Polignac number, because 180853001081 - 2¹⁰ = 180853000057 is a prime.

It is a super-2 number, since 2×180853001081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (180850001081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90426500540 + 90426500541.

It is an arithmetic number, because the mean of its divisors is an integer number (90426500541).

Almost surely, 2^180853001081 is an apocalyptic number.

It is an amenable number.

180853001081 is a deficient number, since it is larger than the sum of its proper divisors (1).

180853001081 is an equidigital number, since it uses as much as digits as its factorization.

180853001081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 35.

The spelling of 180853001081 in words is "one hundred eighty billion, eight hundred fifty-three million, one thousand, eighty-one".