181820682 has 24 divisors (see below), whose sum is σ = 396152640. Its totient is φ = 60267240.

The previous prime is 181820663. The next prime is 181820689. The reversal of 181820682 is 286028181.

181820682 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (181820689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24994 + ... + 31437.

It is an arithmetic number, because the mean of its divisors is an integer number (16506360).

Almost surely, 2^181820682 is an apocalyptic number.

181820682 is an abundant number, since it is smaller than the sum of its proper divisors (214331958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181820682 is a wasteful number, since it uses less digits than its factorization.

181820682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56618 (or 56615 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 181820682 is about 13484.0899581692. The cubic root of 181820682 is about 566.5189316528.

It can be divided in two parts, 1818 and 20682, that added together give a square (22500 = 150²).

The spelling of 181820682 in words is "one hundred eighty-one million, eight hundred twenty thousand, six hundred eighty-two".