19897041 has 8 divisors (see below), whose sum is σ = 26964544. Its totient is φ = 13047120.

The previous prime is 19897037. The next prime is 19897049. The reversal of 19897041 is 14079891.

It is a happy number.

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

It is not a de Polignac number, because 19897041 - 2² = 19897037 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19897049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54181 + ... + 54546.

It is an arithmetic number, because the mean of its divisors is an integer number (3370568).

Almost surely, 2^19897041 is an apocalyptic number.

It is an amenable number.

19897041 is a deficient number, since it is larger than the sum of its proper divisors (7067503).

19897041 is a wasteful number, since it uses less digits than its factorization.

19897041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108791.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 19897041 is about 4460.6099358720. The cubic root of 19897041 is about 270.9751705396.

The spelling of 19897041 in words is "nineteen million, eight hundred ninety-seven thousand, forty-one".