20350149949 has 2 divisors, whose sum is σ = 20350149950. Its totient is φ = 20350149948.

The previous prime is 20350149923. The next prime is 20350149971. The reversal of 20350149949 is 94994105302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15448749849 + 4901400100 = 124293^2 + 70010^2 .

It is a cyclic number.

It is not a de Polignac number, because 20350149949 - 2⁷ = 20350149821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20350149899 and 20350149908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20350141949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10175074974 + 10175074975.

It is an arithmetic number, because the mean of its divisors is an integer number (10175074975).

Almost surely, 2^20350149949 is an apocalyptic number.

It is an amenable number.

20350149949 is a deficient number, since it is larger than the sum of its proper divisors (1).

20350149949 is an equidigital number, since it uses as much as digits as its factorization.

20350149949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 20350149949 in words is "twenty billion, three hundred fifty million, one hundred forty-nine thousand, nine hundred forty-nine".