19324991057 has 2 divisors, whose sum is σ = 19324991058. Its totient is φ = 19324991056.

The previous prime is 19324991041. The next prime is 19324991117. The reversal of 19324991057 is 75019942391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18837288001 + 487703056 = 137249^2 + 22084^2 .

It is a cyclic number.

It is not a de Polignac number, because 19324991057 - 2⁴ = 19324991041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19324990996 and 19324991014.

It is not a weakly prime, because it can be changed into another prime (19324991027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9662495528 + 9662495529.

It is an arithmetic number, because the mean of its divisors is an integer number (9662495529).

Almost surely, 2^19324991057 is an apocalyptic number.

It is an amenable number.

19324991057 is a deficient number, since it is larger than the sum of its proper divisors (1).

19324991057 is an equidigital number, since it uses as much as digits as its factorization.

19324991057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 50.

The spelling of 19324991057 in words is "nineteen billion, three hundred twenty-four million, nine hundred ninety-one thousand, fifty-seven".