19388097 has 12 divisors (see below), whose sum is σ = 28114944. Its totient is φ = 12874680.

The previous prime is 19388081. The next prime is 19388099. The reversal of 19388097 is 79088391.

It is not a de Polignac number, because 19388097 - 2⁴ = 19388081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19388099) 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 11 ways as a sum of consecutive naturals, for example, 1729 + ... + 6462.

It is an arithmetic number, because the mean of its divisors is an integer number (2342912).

Almost surely, 2^19388097 is an apocalyptic number.

It is an amenable number.

19388097 is a deficient number, since it is larger than the sum of its proper divisors (8726847).

19388097 is a wasteful number, since it uses less digits than its factorization.

19388097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8460 (or 8457 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 19388097 is about 4403.1916833134. The cubic root of 19388097 is about 268.6447727939.

The spelling of 19388097 in words is "nineteen million, three hundred eighty-eight thousand, ninety-seven".