1853220220 has 12 divisors (see below), whose sum is σ = 3891762504. Its totient is φ = 741288080.

The previous prime is 1853220179. The next prime is 1853220223. The reversal of 1853220220 is 220223581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1853220223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46330486 + ... + 46330525.

It is an arithmetic number, because the mean of its divisors is an integer number (324313542).

Almost surely, 2^1853220220 is an apocalyptic number.

1853220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1853220220 is an abundant number, since it is smaller than the sum of its proper divisors (2038542284).

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

1853220220 is a wasteful number, since it uses less digits than its factorization.

1853220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92661020 (or 92661018 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1853220220 is about 43049.0443564082. The cubic root of 1853220220 is about 1228.3128917595.

The spelling of 1853220220 in words is "one billion, eight hundred fifty-three million, two hundred twenty thousand, two hundred twenty".