1850468689 has 4 divisors (see below), whose sum is σ = 1851870820. Its totient is φ = 1849066560.

The previous prime is 1850468681. The next prime is 1850468759. The reversal of 1850468689 is 9868640581.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1711228689 + 139240000 = 41367^2 + 11800^2 .

It is a cyclic number.

It is not a de Polignac number, because 1850468689 - 2³ = 1850468681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1850468681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699084 + ... + 701725.

It is an arithmetic number, because the mean of its divisors is an integer number (462967705).

Almost surely, 2^1850468689 is an apocalyptic number.

It is an amenable number.

1850468689 is a deficient number, since it is larger than the sum of its proper divisors (1402131).

1850468689 is a wasteful number, since it uses less digits than its factorization.

1850468689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402130.

The product of its (nonzero) digits is 3317760, while the sum is 55.

The square root of 1850468689 is about 43017.0743891306. The cubic root of 1850468689 is about 1227.7046864652.

The spelling of 1850468689 in words is "one billion, eight hundred fifty million, four hundred sixty-eight thousand, six hundred eighty-nine".