1820285061 has 16 divisors (see below), whose sum is σ = 2783243904. Its totient is φ = 1036609344.

The previous prime is 1820285023. The next prime is 1820285069. The reversal of 1820285061 is 1605820281.

It is not a de Polignac number, because 1820285061 - 2⁹ = 1820284549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820285069) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 141766 + ... + 154071.

It is an arithmetic number, because the mean of its divisors is an integer number (173952744).

Almost surely, 2^1820285061 is an apocalyptic number.

It is an amenable number.

1820285061 is a deficient number, since it is larger than the sum of its proper divisors (962958843).

1820285061 is a wasteful number, since it uses less digits than its factorization.

1820285061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296140.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 1820285061 is about 42664.7988510435. The cubic root of 1820285061 is about 1220.9928898778.

The spelling of 1820285061 in words is "one billion, eight hundred twenty million, two hundred eighty-five thousand, sixty-one".