1685020022 has 8 divisors (see below), whose sum is σ = 2888605776. Its totient is φ = 722151432.

The previous prime is 1685020021. The next prime is 1685020039. The reversal of 1685020022 is 2200205861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1685019973 and 1685020000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685020021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60179273 + ... + 60179300.

It is an arithmetic number, because the mean of its divisors is an integer number (361075722).

Almost surely, 2^1685020022 is an apocalyptic number.

1685020022 is a deficient number, since it is larger than the sum of its proper divisors (1203585754).

1685020022 is a wasteful number, since it uses less digits than its factorization.

1685020022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120358582.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1685020022 is about 41048.9953835657. The cubic root of 1685020022 is about 1189.9672853092.

Adding to 1685020022 its reverse (2200205861), we get a palindrome (3885225883).

The spelling of 1685020022 in words is "one billion, six hundred eighty-five million, twenty thousand, twenty-two".