19958961037 has 2 divisors, whose sum is σ = 19958961038. Its totient is φ = 19958961036.

The previous prime is 19958960977. The next prime is 19958961049. The reversal of 19958961037 is 73016985991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19358269956 + 600691081 = 139134^2 + 24509^2 .

It is a cyclic number.

It is not a de Polignac number, because 19958961037 - 2³¹ = 17811477389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19958961437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9979480518 + 9979480519.

It is an arithmetic number, because the mean of its divisors is an integer number (9979480519).

Almost surely, 2^19958961037 is an apocalyptic number.

It is an amenable number.

19958961037 is a deficient number, since it is larger than the sum of its proper divisors (1).

19958961037 is an equidigital number, since it uses as much as digits as its factorization.

19958961037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3674160, while the sum is 58.

The spelling of 19958961037 in words is "nineteen billion, nine hundred fifty-eight million, nine hundred sixty-one thousand, thirty-seven".