20239349783 has 2 divisors, whose sum is σ = 20239349784. Its totient is φ = 20239349782.

The previous prime is 20239349699. The next prime is 20239349789. The reversal of 20239349783 is 38794393202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20239349783 - 2⁸ = 20239349527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20239349789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10119674891 + 10119674892.

It is an arithmetic number, because the mean of its divisors is an integer number (10119674892).

Almost surely, 2^20239349783 is an apocalyptic number.

20239349783 is a deficient number, since it is larger than the sum of its proper divisors (1).

20239349783 is an equidigital number, since it uses as much as digits as its factorization.

20239349783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 50.

The spelling of 20239349783 in words is "twenty billion, two hundred thirty-nine million, three hundred forty-nine thousand, seven hundred eighty-three".