1855052120 has 32 divisors (see below), whose sum is σ = 4355341920. Its totient is φ = 709758720.

The previous prime is 1855052119. The next prime is 1855052123. The reversal of 1855052120 is 212505581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1855052123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1007261 + ... + 1009100.

It is an arithmetic number, because the mean of its divisors is an integer number (136104435).

Almost surely, 2^1855052120 is an apocalyptic number.

1855052120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1855052120 is an abundant number, since it is smaller than the sum of its proper divisors (2500289800).

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

1855052120 is a wasteful number, since it uses less digits than its factorization.

1855052120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016395 (or 2016391 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 1855052120 is about 43070.3159960546. The cubic root of 1855052120 is about 1228.7174857646.

The spelling of 1855052120 in words is "one billion, eight hundred fifty-five million, fifty-two thousand, one hundred twenty".