181316710969 has 3 divisors (see below), whose sum is σ = 181317136783. Its totient is φ = 181316285156.

The previous prime is 181316710937. The next prime is 181316711027. The reversal of 181316710969 is 969017613181.

The square root of 181316710969 is 425813.

It is a perfect power (a square), and thus also a powerful number.

181316710969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 969017613181 = 7853 ⋅123394577.

It can be written as a sum of positive squares in only one way, i.e., 150757475625 + 30559235344 = 388275^2 + 174812^2 .

It is not a de Polignac number, because 181316710969 - 2⁵ = 181316710937 is a prime.

It is a super-2 number, since 2×181316710969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181316720969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 212907 + ... + 638719.

Almost surely, 2^181316710969 is an apocalyptic number.

181316710969 is the 425813-rd square number.

181316710969 is the 212907-th centered octagonal number.

It is an amenable number.

181316710969 is a deficient number, since it is larger than the sum of its proper divisors (425814).

181316710969 is an frugal number, since it uses more digits than its factorization.

181316710969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851626 (or 425813 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 52.

The spelling of 181316710969 in words is "one hundred eighty-one billion, three hundred sixteen million, seven hundred ten thousand, nine hundred sixty-nine".