1800840196 has 12 divisors (see below), whose sum is σ = 3151977948. Its totient is φ = 900275072.

The previous prime is 1800840193. The next prime is 1800840221. The reversal of 1800840196 is 6910480081.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 900000000 + 900840196 = 30000^2 + 30014^2 .

It is not an unprimeable number, because it can be changed into a prime (1800840193) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5401 + ... + 60256.

It is an arithmetic number, because the mean of its divisors is an integer number (262664829).

Almost surely, 2^1800840196 is an apocalyptic number.

It is an amenable number.

1800840196 is a deficient number, since it is larger than the sum of its proper divisors (1351137752).

1800840196 is a wasteful number, since it uses less digits than its factorization.

1800840196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72518 (or 72516 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 1800840196 is about 42436.3075208011. The cubic root of 1800840196 is about 1216.6296378881.

The spelling of 1800840196 in words is "one billion, eight hundred million, eight hundred forty thousand, one hundred ninety-six".