19958941 has 2 divisors, whose sum is σ = 19958942. Its totient is φ = 19958940.

The previous prime is 19958929. The next prime is 19958957. The reversal of 19958941 is 14985991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18887716 + 1071225 = 4346^2 + 1035^2 .

It is a cyclic number.

It is not a de Polignac number, because 19958941 - 2⁵ = 19958909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19958891 and 19958900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19958921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9979470 + 9979471.

It is an arithmetic number, because the mean of its divisors is an integer number (9979471).

Almost surely, 2^19958941 is an apocalyptic number.

It is an amenable number.

19958941 is a deficient number, since it is larger than the sum of its proper divisors (1).

19958941 is an equidigital number, since it uses as much as digits as its factorization.

19958941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 46.

The square root of 19958941 is about 4467.5430607886. The cubic root of 19958941 is about 271.2558822795.

The spelling of 19958941 in words is "nineteen million, nine hundred fifty-eight thousand, nine hundred forty-one".