19325897 has 4 divisors (see below), whose sum is σ = 19424196. Its totient is φ = 19227600.

The previous prime is 19325881. The next prime is 19325899. The reversal of 19325897 is 79852391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79852391 = 83 ⋅962077.

It can be written as a sum of positive squares in 2 ways, for example, as 10863616 + 8462281 = 3296^2 + 2909^2 .

It is a cyclic number.

It is not a de Polignac number, because 19325897 - 2⁴ = 19325881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19325899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48854 + ... + 49247.

It is an arithmetic number, because the mean of its divisors is an integer number (4856049).

Almost surely, 2^19325897 is an apocalyptic number.

It is an amenable number.

19325897 is a deficient number, since it is larger than the sum of its proper divisors (98299).

19325897 is an equidigital number, since it uses as much as digits as its factorization.

19325897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98298.

The product of its digits is 136080, while the sum is 44.

The square root of 19325897 is about 4396.1229509649. The cubic root of 19325897 is about 268.3571804310.

The spelling of 19325897 in words is "nineteen million, three hundred twenty-five thousand, eight hundred ninety-seven".