1852109340839 has 4 divisors (see below), whose sum is σ = 1852926330024. Its totient is φ = 1851292351656.

The previous prime is 1852109340779. The next prime is 1852109340847. The reversal of 1852109340839 is 9380439012581.

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

It is a cyclic number.

It is not a de Polignac number, because 1852109340839 - 2¹² = 1852109336743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1852109340899) 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, 408491192 + ... + 408495725.

It is an arithmetic number, because the mean of its divisors is an integer number (463231582506).

Almost surely, 2^{1852109340839} is an apocalyptic number.

1852109340839 is a deficient number, since it is larger than the sum of its proper divisors (816989185).

1852109340839 is an equidigital number, since it uses as much as digits as its factorization.

1852109340839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816989184.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 1852109340839 in words is "one trillion, eight hundred fifty-two billion, one hundred nine million, three hundred forty thousand, eight hundred thirty-nine".