181661483 has 2 divisors, whose sum is σ = 181661484. Its totient is φ = 181661482.

The previous prime is 181661419. The next prime is 181661509. The reversal of 181661483 is 384166181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 181661483 - 2⁶ = 181661419 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (181661783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90830741 + 90830742.

It is an arithmetic number, because the mean of its divisors is an integer number (90830742).

Almost surely, 2^181661483 is an apocalyptic number.

181661483 is a deficient number, since it is larger than the sum of its proper divisors (1).

181661483 is an equidigital number, since it uses as much as digits as its factorization.

181661483 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 38.

The square root of 181661483 is about 13478.1854490877. The cubic root of 181661483 is about 566.3535386918.

The spelling of 181661483 in words is "one hundred eighty-one million, six hundred sixty-one thousand, four hundred eighty-three".