19325041921 has 2 divisors, whose sum is σ = 19325041922. Its totient is φ = 19325041920.

The previous prime is 19325041913. The next prime is 19325041933. The reversal of 19325041921 is 12914052391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18019303696 + 1305738225 = 134236^2 + 36135^2 .

It is a cyclic number.

It is not a de Polignac number, because 19325041921 - 2³ = 19325041913 is a prime.

It is not a weakly prime, because it can be changed into another prime (19325041951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9662520960 + 9662520961.

It is an arithmetic number, because the mean of its divisors is an integer number (9662520961).

Almost surely, 2^19325041921 is an apocalyptic number.

It is an amenable number.

19325041921 is a deficient number, since it is larger than the sum of its proper divisors (1).

19325041921 is an equidigital number, since it uses as much as digits as its factorization.

19325041921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 37.

The spelling of 19325041921 in words is "nineteen billion, three hundred twenty-five million, forty-one thousand, nine hundred twenty-one".