1850200040 has 64 divisors (see below), whose sum is σ = 4678128000. Its totient is φ = 653444352.

The previous prime is 1850200007. The next prime is 1850200067. The reversal of 1850200040 is 400020581.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1850199985 and 1850200021.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 65390 + ... + 89309.

It is an arithmetic number, because the mean of its divisors is an integer number (73095750).

Almost surely, 2^1850200040 is an apocalyptic number.

1850200040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1850200040 is an abundant number, since it is smaller than the sum of its proper divisors (2827927960).

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

1850200040 is a wasteful number, since it uses less digits than its factorization.

1850200040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154746 (or 154742 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1850200040 is about 43013.9516901203. The cubic root of 1850200040 is about 1227.6452713198.

The spelling of 1850200040 in words is "one billion, eight hundred fifty million, two hundred thousand, forty".