180819000881 has 2 divisors, whose sum is σ = 180819000882. Its totient is φ = 180819000880.

The previous prime is 180819000871. The next prime is 180819000941. The reversal of 180819000881 is 188000918081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166284528400 + 14534472481 = 407780^2 + 120559^2 .

It is an emirp because it is prime and its reverse (188000918081) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 188000618081 and 180816000881.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180819000881 is a prime.

It is a super-2 number, since 2×180819000881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (180819000871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90409500440 + 90409500441.

It is an arithmetic number, because the mean of its divisors is an integer number (90409500441).

Almost surely, 2^180819000881 is an apocalyptic number.

It is an amenable number.

180819000881 is a deficient number, since it is larger than the sum of its proper divisors (1).

180819000881 is an equidigital number, since it uses as much as digits as its factorization.

180819000881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 44.

The spelling of 180819000881 in words is "one hundred eighty billion, eight hundred nineteen million, eight hundred eighty-one", and thus it is an aban number.