1851042312 has 96 divisors (see below), whose sum is σ = 5808017280. Its totient is φ = 521614080.

The previous prime is 1851042307. The next prime is 1851042343. The reversal of 1851042312 is 2132401581.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 11637 + ... + 61947.

It is an arithmetic number, because the mean of its divisors is an integer number (60500180).

Almost surely, 2^1851042312 is an apocalyptic number.

1851042312 is a gapful number since it is divisible by the number (12) 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 1851042312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2904008640).

1851042312 is an abundant number, since it is smaller than the sum of its proper divisors (3956974968).

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

1851042312 is a wasteful number, since it uses less digits than its factorization.

1851042312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50403 (or 50396 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1851042312 is about 43023.7412599137. The cubic root of 1851042312 is about 1227.8315312467.

Adding to 1851042312 its reverse (2132401581), we get a palindrome (3983443893).

The spelling of 1851042312 in words is "one billion, eight hundred fifty-one million, forty-two thousand, three hundred twelve".