1941891839 has 4 divisors (see below), whose sum is σ = 1974805320. Its totient is φ = 1908978360.

The previous prime is 1941891767. The next prime is 1941891859. The reversal of 1941891839 is 9381981491.

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 1941891839 - 2⁸ = 1941891583 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 (1941891859) 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, 16456652 + ... + 16456769.

It is an arithmetic number, because the mean of its divisors is an integer number (493701330).

Almost surely, 2^1941891839 is an apocalyptic number.

1941891839 is a deficient number, since it is larger than the sum of its proper divisors (32913481).

1941891839 is an equidigital number, since it uses as much as digits as its factorization.

1941891839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32913480.

The product of its digits is 559872, while the sum is 53.

The square root of 1941891839 is about 44066.9018538858. The cubic root of 1941891839 is about 1247.5989833682.

The spelling of 1941891839 in words is "one billion, nine hundred forty-one million, eight hundred ninety-one thousand, eight hundred thirty-nine".