1941838109 has 4 divisors (see below), whose sum is σ = 2004478080. Its totient is φ = 1879198140.

The previous prime is 1941838103. The next prime is 1941838111. The reversal of 1941838109 is 9018381491.

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 a de Polignac number, because none of the positive numbers 2^k-1941838109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1941838109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1941838103) 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, 31319939 + ... + 31320000.

It is an arithmetic number, because the mean of its divisors is an integer number (501119520).

Almost surely, 2^1941838109 is an apocalyptic number.

It is an amenable number.

1941838109 is a deficient number, since it is larger than the sum of its proper divisors (62639971).

1941838109 is an equidigital number, since it uses as much as digits as its factorization.

1941838109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62639970.

The product of its (nonzero) digits is 62208, while the sum is 44.

The square root of 1941838109 is about 44066.2922084443. The cubic root of 1941838109 is about 1247.5874767006.

The spelling of 1941838109 in words is "one billion, nine hundred forty-one million, eight hundred thirty-eight thousand, one hundred nine".