181982061 has 12 divisors (see below), whose sum is σ = 263865888. Its totient is φ = 120858504.

The previous prime is 181982051. The next prime is 181982081. The reversal of 181982061 is 160289181.

It is not a de Polignac number, because 181982061 - 2¹⁵ = 181949293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181982011) 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, 36075 + ... + 40808.

It is an arithmetic number, because the mean of its divisors is an integer number (21988824).

Almost surely, 2^181982061 is an apocalyptic number.

It is an amenable number.

181982061 is a deficient number, since it is larger than the sum of its proper divisors (81883827).

181982061 is a wasteful number, since it uses less digits than its factorization.

181982061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77152 (or 77149 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 181982061 is about 13490.0726832734. The cubic root of 181982061 is about 566.6864909251.

The spelling of 181982061 in words is "one hundred eighty-one million, nine hundred eighty-two thousand, sixty-one".