1850120920 has 64 divisors (see below), whose sum is σ = 4483952640. Its totient is φ = 685027200.

The previous prime is 1850120903. The next prime is 1850120957. The reversal of 1850120920 is 290210581.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3916 + ... + 60955.

It is an arithmetic number, because the mean of its divisors is an integer number (70061760).

Almost surely, 2^1850120920 is an apocalyptic number.

1850120920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1850120920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2241976320).

1850120920 is an abundant number, since it is smaller than the sum of its proper divisors (2633831720).

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

1850120920 is a wasteful number, since it uses less digits than its factorization.

1850120920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64936 (or 64932 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1850120920 is about 43013.0319786922. The cubic root of 1850120920 is about 1227.6277718286.

The spelling of 1850120920 in words is "one billion, eight hundred fifty million, one hundred twenty thousand, nine hundred twenty".