2185020120 has 64 divisors (see below), whose sum is σ = 6766525440. Its totient is φ = 563875200.

The previous prime is 2185020119. The next prime is 2185020137. The reversal of 2185020120 is 210205812.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289966 + ... + 297405.

It is an arithmetic number, because the mean of its divisors is an integer number (105726960).

Almost surely, 2^2185020120 is an apocalyptic number.

2185020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2185020120 is an abundant number, since it is smaller than the sum of its proper divisors (4581505320).

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

2185020120 is a wasteful number, since it uses less digits than its factorization.

2185020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587416 (or 587412 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2185020120 is about 46744.1987844481. The cubic root of 2185020120 is about 1297.6327966516.

Adding to 2185020120 its reverse (210205812), we get a palindrome (2395225932).

The spelling of 2185020120 in words is "two billion, one hundred eighty-five million, twenty thousand, one hundred twenty".