181910212130 has 16 divisors (see below), whose sum is σ = 327592219320. Its totient is φ = 72729898752.

The previous prime is 181910212123. The next prime is 181910212153. The reversal of 181910212130 is 31212019181.

It is a happy number.

181910212130 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 142511535049 + 39398677081 = 377507^2 + 198491^2 .

It is a junction number, because it is equal to n+sod(n) for n = 181910212093 and 181910212102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4250909 + ... + 4293488.

Almost surely, 2^181910212130 is an apocalyptic number.

181910212130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

181910212130 is a deficient number, since it is larger than the sum of its proper divisors (145682007190).

181910212130 is a wasteful number, since it uses less digits than its factorization.

181910212130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8546533.

The product of its (nonzero) digits is 864, while the sum is 29.

The spelling of 181910212130 in words is "one hundred eighty-one billion, nine hundred ten million, two hundred twelve thousand, one hundred thirty".