20849837941 has 4 divisors (see below), whose sum is σ = 21568797900. Its totient is φ = 20130877984.

The previous prime is 20849837923. The next prime is 20849838001. The reversal of 20849837941 is 14973894802.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6913091025 + 13936746916 = 83145^2 + 118054^2 .

It is a cyclic number.

It is not a de Polignac number, because 20849837941 - 2⁹ = 20849837429 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 (20849837441) 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, 359479936 + ... + 359479993.

It is an arithmetic number, because the mean of its divisors is an integer number (5392199475).

Almost surely, 2^20849837941 is an apocalyptic number.

It is an amenable number.

20849837941 is a deficient number, since it is larger than the sum of its proper divisors (718959959).

20849837941 is an equidigital number, since it uses as much as digits as its factorization.

20849837941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718959958.

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 20849837941 in words is "twenty billion, eight hundred forty-nine million, eight hundred thirty-seven thousand, nine hundred forty-one".