1850372449 has 4 divisors (see below), whose sum is σ = 1851978436. Its totient is φ = 1848766464.

The previous prime is 1850372417. The next prime is 1850372467. The reversal of 1850372449 is 9442730581.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9442730581 = 23633 ⋅399557.

It can be written as a sum of positive squares in 2 ways, for example, as 1142440000 + 707932449 = 33800^2 + 26607^2 .

It is a cyclic number.

It is not a de Polignac number, because 1850372449 - 2⁵ = 1850372417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1850372749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 801264 + ... + 803569.

It is an arithmetic number, because the mean of its divisors is an integer number (462994609).

Almost surely, 2^1850372449 is an apocalyptic number.

It is an amenable number.

1850372449 is a deficient number, since it is larger than the sum of its proper divisors (1605987).

1850372449 is a wasteful number, since it uses less digits than its factorization.

1850372449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605986.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 1850372449 is about 43015.9557490009. The cubic root of 1850372449 is about 1227.6834024255.

The spelling of 1850372449 in words is "one billion, eight hundred fifty million, three hundred seventy-two thousand, four hundred forty-nine".