19047197 has 8 divisors (see below), whose sum is σ = 21404544. Its totient is φ = 16817328.

The previous prime is 19047187. The next prime is 19047199. The reversal of 19047197 is 79174091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19047197 - 2¹⁴ = 19030813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19047197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19047199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31553 + ... + 32150.

It is an arithmetic number, because the mean of its divisors is an integer number (2675568).

Almost surely, 2^19047197 is an apocalyptic number.

It is an amenable number.

19047197 is a deficient number, since it is larger than the sum of its proper divisors (2357347).

19047197 is a wasteful number, since it uses less digits than its factorization.

19047197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63739.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 19047197 is about 4364.3094528230. The cubic root of 19047197 is about 267.0609305131.

The spelling of 19047197 in words is "nineteen million, forty-seven thousand, one hundred ninety-seven".