20894183683 has 2 divisors, whose sum is σ = 20894183684. Its totient is φ = 20894183682.

The previous prime is 20894183677. The next prime is 20894183767. The reversal of 20894183683 is 38638149802.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20894183683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20894183683.

It is not a weakly prime, because it can be changed into another prime (20894183603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10447091841 + 10447091842.

It is an arithmetic number, because the mean of its divisors is an integer number (10447091842).

Almost surely, 2^20894183683 is an apocalyptic number.

20894183683 is a deficient number, since it is larger than the sum of its proper divisors (1).

20894183683 is an equidigital number, since it uses as much as digits as its factorization.

20894183683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 20894183683 in words is "twenty billion, eight hundred ninety-four million, one hundred eighty-three thousand, six hundred eighty-three".