1840838931193 has 4 divisors (see below), whose sum is σ = 1841251402368. Its totient is φ = 1840426460020.

The previous prime is 1840838931157. The next prime is 1840838931223. The reversal of 1840838931193 is 3911398380481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1840838931193 - 2¹⁷ = 1840838800121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1840838931293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206228893 + ... + 206237818.

It is an arithmetic number, because the mean of its divisors is an integer number (460312850592).

Almost surely, 2^{1840838931193} is an apocalyptic number.

It is an amenable number.

1840838931193 is a deficient number, since it is larger than the sum of its proper divisors (412471175).

1840838931193 is an equidigital number, since it uses as much as digits as its factorization.

1840838931193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412471174.

The product of its (nonzero) digits is 4478976, while the sum is 58.

The spelling of 1840838931193 in words is "one trillion, eight hundred forty billion, eight hundred thirty-eight million, nine hundred thirty-one thousand, one hundred ninety-three".